224 results about "Grain number" patented technology

The invention relates to a ridge-covering and trench-sowing cultivation and fertilization technology of dryland winter wheat, which comprises the following steps of: preparing land, applying a base fertilizer, forming ridges with the widths of 35-40cm and covering a white plastic film on the ridges; preserving a ridge width of 30-35cm between two ridges; sowing wheat in grooves with a row distance of 15-20cm and a rowing amount of 150-225 kg/ha; uncovering the film during the total growth fertility period of the wheat so as to keep the strip film covering the soil surface; ditching and topdressing a nitrogen fertilizer of 30-45 kg/hm between wheat rows when the soil starts to defrost in spring and the wheat starts to turn green; milling in time after topdressing the fertilizer; keeping the plastic film covering the ridges after wheat is harvested; and returning all straws to be covered in grooves among the ridges for stimulating the rainfall infiltration in summer and lessening the water evaporation loss of the soil. The invention can stimulate the formation and the transferring of dry substances to grains, remarkably improves the ear grain number and the thousand grain weight and remarkably increases the wheat yield.

The invention relates to the field of agricultural engineering, and particularly relates to a device and a method for monitoring corn precision seeding operation. The device particularly comprises a microprocessor, input and output devices facing users, an infrared photoelectric sensor, a signal acquisition circuit and an alarm device. The method particularly comprises that: after operation parameters are set by the users on a setting interface, an operation monitoring scanning cycle is started; a signal indicating the state of seeding operation is firstly acquired, then the signal indicating the state of seeding operation is computed with combination of the operation parameters so that parameters indicating the state of seeding operation are obtained and outputted and displayed to the users in real time; then whether the seeding state is normal is judged via the operation state parameters, and alarm is performed to the users if the seeding state is abnormal through judgment; and finally the scanning monitoring process is repeated via returning to the operation monitoring scanning cycle till the users terminate. Seeding grain numbers in corn precision seeding operation are monitored in real time by the device and the method, and great fault alarm sensitivity is achieved.

Provided is a method for screening varieties with the high utilization rate of nitrogen from multiple wheat varieties. The method comprises following steps: selecting wheat varieties with grains of the same size, placing the wheat varieties into a culture dish till the grains germinate to become rooted seedlings; selecting seedlings with growth uniformity from seedlings, dividing them into two groups and utilizing nutrition liquid with different nitrogen concentrations to pour till wheat become mature; testing and calculating relative strain height, relative grain number and relative thousand seed weight of each variety; making comprehensive comparisons and selecting several wheat varieties with three highest integrated indices as varieties with the high utilization rate of nitrogen; becoming re-screening seedlings through germination, taking re-screening seedlings with uniform growth, diving them into two groups, utilizing nutrition liquid with different nitrogen concentrations for water culture and testing and calculating relative dry matter weight, relative nitrogen content and relative chlorophyll content of each variety; and making comprehensive comparisons and selecting one wheat variety with three highest integrated indices as the variety with relatively higher utilization rate of nitrogen. The method for screening varieties with the high utilization rate of nitrogen from multiple wheat varieties has following beneficial effects: wheat varieties finally screened by the method provide material for further improvement of existing varieties and research of biological characteristics and physiochemical mechanisms.

The invention discloses a rice overgrowth-controlling, lodging-resistant and yield-increasing agent and an application thereof. The rice overgrowth-controlling, lodging-resistant and yield-increasing agent mainly comprises a plant growth regulator and a fertilizer, wherein the regulator is brassinolide and paclobutrazol or uniconazol, and the fertilizer is one or combination of more than two of substances containing N/P/K/B/Zn/Ca/Cu/Fe/Mn/Mo/Me/S/Cl/Si and other elements, such as urea, potassium dihydrogen phosphate, diammonium phosphate, calcium carbonate, potassium nitrate, silicon fertilizer, zinc sulfate, ferrous sulfate, potassium chloride, boric acid, borax, copper sulfate, ferrous sulfate, molybdenum fertilizer, magnesium sulfate, potassium sulfate, manganese sulfate and rare earth fertilizer. The rice overgrowth-controlling, lodging-resistant and yield-increasing agent has good safety and can effectively shorten the length between neck-panicle nodes and top second nodes of rice and enhance lodging resistance of rice; simultaneously, the rice overgrowth-controlling, lodging-resistant and yield-increasing agent can not affect safe dates of full heading and the grain number per spike of rice, prolong the service life of functional leaf of rice, improve the seed setting rate and the 1000-grain weight of rice and significantly affect the yield of rice. The rice overgrowth-controlling, lodging-resistant and yield-increasing agent is suitable for various types of rice, including conventional rice, hybrid rice and super hybrid rice, and has the advantages of low cost and high performance-price ratio.

The invention discloses a method and a device for performing high-precision determination of corn ear variety based on images. A corn ear week view using cob as central axis is established and the week view is processed by image processing algorithms to obtain data of morphological index, ear grain row number and per row grain number, and the total grain number of ear grains is calculated based on the ear grain row numbers and the per row grain numbers; the corn ears are threshed to produce a cob and ear grains; the total weight of the ear grains or the weight of the cob is measured, and the total weight of the ear grains is calculated based on the weight of the corn ear and the weight of the cob; and the mean grain weight and the 100-grain weight are calculated based on the total weight of the ear grains and the total number of the ear grains. Before thresh of the corn ears, the weight of the corn ears is measured by a weighing sensor. With the digital image processing and sensor techniques, after obtaining the one-week ear grain distribution diagram of the corn ears, and the parameters of all the corn ear grains are calculated, including morphological index, ear grain row number, per row grain number, mean grain weight and so on. The precision of determining the variety of the corn ears is improved.

The invention discloses a high-efficiency corn ear seed test method and a device based on an image. The method comprises the following steps that an image of N corn ears placed in parallel is obtained and processed by an image processing algorithm; the shape indexes and average line number of the N corn ears are calculated; the N corn ears are threshed; cobs and grains are obtained; the cobs are weighed one by one, and the grain weight of each corn ear is calculated; a few grains are taken from any pile as samples; the average grain weight and hundred-grain weight are calculated by image processing and weighing; the average grain weight of the samples serves as the average grain weight of each corn ear; and the total grain number and the grain line number of each corn ears are calculated according to the grain weight of each corn ear. Multiple corn ears are subjected to seed test simultaneously by a digital image processing and sensor technology, and the efficiency of the corn seed test is improved greatly.

The invention discloses a probe type online three-dimensional imaging detection system which comprises a crystal growth reactor, a three-dimensional imaging probe, a light source and a strobe controller, a computer for processing an image, and a display, wherein the three-dimensional imaging probe is used for transmitting a 2D image to the computer; the computer is used for firstly deleting a background by using a splitting technology and then identifying corresponding points and lines from the 2D image by using an angle/edge/line detection technology; for few angles/lines which are detected difficultly, indistinct angles/lines are predicted/estimated by using molecule modeling and a crystal shape model on the basis of the obtained angles and lines, 3D image reconstruction is realized by using the determined points and lines, then particle description characteristics of 3D crystals are obtained by combining with solution parameters measured online, and finally, the control and the amplification of a crystallization process in a reactor are realized by using a crystalline form grain number balancing model and computational fluid mechanics. The system and the method provided by the invention are capable of directly acquiring the image from the solution and realizing the reconstruction of the 3D crystalline form, and are high in image processing speed.

The invention relates to an ultra-fine grain hard alloy which comprises WC, a binding phase and a grain growth inhibitor. The weight percentage content of the WC is 83%-96%, the average grain size is(0.2-0.6) micron, the WC grain size deviation coefficient K is larger than or equal to 0.54 and smaller than or equal to 0.61, the grain number percentage of the WC with the grain size larger than 3 times and smaller than 5 times is smaller than or equal to 5%, and the grain number percentage of the WC with the grain size larger than 5 times is smaller than or equal to 1.1%; and the binding phaseis Co, the content of Co in percentage by weight is 3%-15%, and the grain growth inhibitor comprises Cr3C2, VC, TiC and/or Ti (C, N). The invention further relates to a preparation method of the superfine hard alloy. An end mill or a drill bit manufactured by adopting the ultrafine grain hard alloy has excellent use performance in high-speed or high-efficiency cutting machining of difficult-to-machine materials such as stainless steel, a titanium alloy, PCBs, acrylic, glass fibers, hardwood, resin and CFRP.

The invention relates to the technical field of plant gene engineering, in particular to a method for increasing the grain number per ear and reducing plant height by use of rice SNB genes. The nucleotide sequence of SNB genes is shown as SEQ ID NO:1. Artificially mutant rSNB genes are obtained by changing the binding site of microRNA172 in the SNB genes, the nucleotide sequence of the rSNB genes is shown as SEQ ID NO:2, and the sequence of protein encoded by the rSNB genes is shown as SEQ ID NO:3. The grain number per ear of rice is remarkably increased and the plant height of the rice is notably reduced through overexpression of rSNB, and further studies prove that SNB encoded protein has the activity of a transcription suppressor. The functions of the SNB genes on increasing the grain number per ear of the rice and reducing the plant height of the rice are disclosed, and a novel rice genetic improvement method is also provided.

The invention discloses an intelligent granary management system which comprises a central control device, a grain number monitoring and warehouse-in video monitoring device, a warehouse door abnormal-action monitoring device and a safety production alarm device. According to the intelligent granary management system, the grain inventory quantity can be measured accurately in real time, the full-color high-definition frame can be obtained in a dark warehouse-closed environment, and the real scene in the warehouse can be comprehensively monitored by 360 degrees without dead corners and withoutpeople entering into; meanwhile, the positioning is accurate, so that the personnel outside the warehouse can arrive at the accident site in time to rescue the personnel in the warehouse in time, andthe safety of grain production is guaranteed; the opening state of the warehouse door of the granary can be monitored in real time, and whether a person enters the granary is determined; and the timeinformation of the warehouse door opening can be obtained, so that the safety of the grain storage is guaranteed.

The invention discloses a water-saving and high-yield cultivation method for dry land wheat, and relates to cultivation methods of crops. The water-saving and high-yield cultivation method for the dry land wheat comprises the following steps of fertilizing, farming, variety selecting, flat planting, group controlling and intertillage weeding and suspension of soil conservaton drought-resisting. According to the water-saving and high-yield cultivation method for the dry land wheat, downward tying probability of a root before winter is increased through early deep applying of fertilizer, root shoot ratio is increased so as to enable a root system to sufficiently absorb moisture and nutrient of soil at a deep layer, even-row flat planting is adopted to increase the dry land wheat group, strong seedlings are bred, and a reasonable group management strategy is adopted to increase the dry land wheat yield through synchronous improvement of grain number and thousand seed weight on the foundation of a large group. Risk of dressing waiting for rain in the late growth stage of wheat is reduced, and effort and labor are reduced.

The invention discloses a molybdenum blank preparing method, and relates to a method for preparing a pure molybdenum blank with the grain number of 5,000 to 20,000/mm<2> and the grain size of 300 to 800nm. The molybdenum blank preparing method is characterized in that: in the preparation process, submicron-scale molybdenum powder with the granularity of 0.5 to 1um is taken as a raw material and is pretreated, molded and sintered into a molybdenum blank. In the molybdenum blank preparing method, the molybdenum powder is taken as a raw material, and the molybdenum blank with fine grains can be prepared by reducing sintering temperature and shortening the sintering time, and has the density of 9.8 to 10.0, the grain number of 5,000 to 20,000/mm<2> and the grain size of 300 to 800nm. The submicron-scale molybdenum powder is taken as the raw material for preparing the molybdenum blank with fine grains, special requirements on production equipment are absent, and the method is suitable for industrial production.

The invention discloses a conditioning agent for improving the low temperature resisting capacity of wheat.The low temperature resisting conditioning agent for the wheat is prepared from, by weight, 5-10 parts of 6-BA with the mass concentration of 98%, 10-15 parts of naphthylacetic acid salt with the mass concentration of 70%, 20-30 parts of mepigtlat-chloride with the mass concentration of 96%, 10-20 parts of ethephon with the mass concentration of 40% and 20-30 parts of monopotassium phosphate with the mass concentration of 98%, wherein ethyl alcohol and tap water are adopted as solvent.By spraying the conditioning agent to wheat leaves, the constitution of wheat seedlings is enhanced, the low temperature resisting capacity of the wheat is improved, harm of low temperature and cold damage in the later period of the wheat to the wheat is reduced, photosynthesis of the wheat is promoted, transformation of photosynthetic substances are accelerated, the grain number per ear is increased, and the wheat yield is increased.