34results about How to "Suitable for mechanized operation" patented technology

The invention relates to a composite material grinding roller and a manufacturing method thereof. The composite material grinding roller comprises a metal roller body and a plurality of wave-shaped composite bodies, wherein the wave-shaped composite bodies are embedded into a working plane of the metal roller body at equal intervals, are integrated with the metal roller body and are wave-shaped ceramic reinforcements or wave-shaped structural bodies composited from wave-shaped ceramic reinforcements and a metal substrate; the wave-shaped ceramic reinforcements are prepared by curing ceramic particles. The manufacturing method of the composite material grinding roller comprises the following steps: firstly designing and manufacturing the wave-shaped composite bodies of required sizes; then carrying out casting forming; and finally, cooling and processing, so as to obtain the composite material grinding roller. By virtue of design of the wave-shaped ceramic reinforcements, the composite material grinding roller has the structural characteristics that the ceramic reinforcements are easily and orderly arrayed in a mold cavity and are applicable to mechanical operation; the displacement and the malposition of each individual ceramic reinforcement in a casting process are effectively avoided; the whole displacement of the ceramic reinforcements in a working condition use process is avoided, and particularly, the composite material grinding roller is a secondarily poured large-sized composite material grinding roller.

The invention relates to a method for using female sterility gene FST in hybrid rice breeding, and belongs to the field of breeding in the field of agricultural biotechnology. The technical scheme of the present invention is to reproduce the male sterile line according to the three-line or two-line method; the reproduction of the rice female sterile line can be completed by the perennial root asexual reproduction method, or the conditionally expressed dual-purpose transgenic female sterile line can be cultivated, By artificially regulating the expression of the FST gene, the female fertility is restored and self-reproduction is completed; when producing seeds, the male sterile line and the female sterile line are planted in the same field, the pollen recipient is the male sterile line, and the pollen donor is the female CMS, the female CMS pollinates the male CMS, and the seeds are harvested as hybrids. The invention utilizes male sterility (MS) and female sterility (FS) simultaneously to construct a "MS+FS" seed production mode, which is suitable for mechanized operation, prevents mechanical mixing of restorer lines, and can accelerate the popularization and application process of hybrid rice.

The invention discloses a method for planting alfalfa in a moderately severe carbonate saline-alkali soil on a large scale. The method comprises the steps as follows: (1), broadcasting fully rotten a farming manure, diammonium phosphate and potassium sulfate on the surface of the moderately severe carbonate saline-alkali soil in the rainy season of from the sixth to the eighth months, and uniformly spraying coal-washing wastewater; (2), ploughing, leveling and irrigating the moderately severe carbonate saline-alkali soil; (3), selecting alfalfa seeds of a salt-tolerant and drought-resistant variety, and soaking the seeds by using ABT rooting powder; (4), covering the soaked alfalfa seeds with bactericides with alfalfa root nodule bacteria; (5), coating the alfalfa seeds covered with the bactericides; (6), sowing the coated alfalfa seeds into the moderately severe carbonate saline-alkali soil; and (7), after seedling emergence, carrying out field management. The method can be used for planting the alfalfa in the moderately severe carbonate saline-alkali soil on a large scale, and has the characteristics of high seedling emergence speed, high seedling percentage, simplicity for operation, suitability for mechanical operation, easiness in manual control and the like.

The invention provides a spring thin skin melon grafting seedling raising method. The absorbing ability of a grafted seedling root system can be improved, the survival rate of grafted seedlings is improved, the uniformity and evenness of the grafted seedlings are guaranteed, and the mechanical operation of commercial seedlings is facilitated. The method mainly comprises the steps of variety selecting, sowing and seedling raising, grafting, grafted seedling managing and the like, wherein the melon variety is selected from moderate sugar I or abundant sugar I or Huang Zi Jin Yu, and the stock is selected from garden stock I or melon free stock or early maturing new tosa or black seed pumpkin. The double-root-cutting grafting method is adopted in the grafting step. In the seedling raising process, the pest control needs to conform to the principle of giving priority to the agricultural control, ecological control, physical control and biological control and complementing the chemical control.

The invention discloses an industrialized seedling culture method for Chinese onions. A seedling shed is set up according to a conventional method, a seedbed is arranged in the seedling shed, soil in the seedbed is leveled, and ridges are formed. The method specifically includes the following steps of firstly, laying gauze on the seedbed; secondly, filling a nursery seedling plate with a matrix; thirdly, pre-processing seeds before sowing; fourthly, sowing the seeds; fifthly, conducting film mulching; sixthly, managing the seedbed; seventhly, conducting disease control at the seedling stage; eighthly, improving the growth of roots and seedlings. When Chinese onion seedling culture is conducted through the seedling culture technology, the number of seeds which are used is small, seedling emergence is quick, seedlings are robust and resist diseases, root systems are developed, the environment can be artificially controlled for industrialized seedling culture, mechanical transplantation is facilitated, seedling recovery is quick after transplantation, seedling lands are saved, the seedling culture cost is greatly saved, and good development prospects are achieved.

The invention discloses a method for planting alfalfa in a moderately severe alkaline sulfuric acid saline soil on a large scale. The method comprises the steps as follows: (1), broadcasting fully rotten a farming manure, diammonium phosphate, potassium sulfate and industrial coal ash on the surface of the moderately severe alkaline sulfuric acid saline soil, and uniformly spraying coal-washing wastewater; (2), ploughing, leveling and irrigating the moderately severe alkaline sulfuric acid saline soil; (3), selecting alfalfa seeds of a salt-tolerant and drought-resistant variety, and soaking the seeds by using ABT rooting powder; (4), covering the soaked alfalfa seeds with bactericides with alfalfa root nodule bacteria; (5), coating the alfalfa seeds covered with the bactericides; (6), sowing the coated alfalfa seeds into the moderately severe alkaline sulfuric acid saline soil; and (7), after seedling emergence, carrying out field management. The method can be used for planting the alfalfa in the moderately severe alkaline sulfuric acid saline soil on a large scale, and has the characteristics of high seedling emergence speed, high seedling percentage, simplicity for operation, suitability for mechanical operation, easiness in manual control and the like.

The invention discloses a method for cultivating tobacco seedlings by taking vesuvianite particles as a floating seedling matrix, which belongs to the technical field of tobacco breeding. The method comprises the following steps of: using a vesuvianite particle material as a seedling matrix, wherein particle sizes and mass ratios of the vesuvianite particle material are that the vesuvianite particles with the particle size of 1mm accounts for 40 percent and the vesuvianite particles with the particle size of between 2 and 5mm accounts for 60 percent; dissolving a universal nutrient liquid fertilizer for floating seedling of flue-cured tobacco, and then fully mixing with the vesuvianite particles, wherein each cube of the vesuvianite particles use 2kg of the universal nutrient liquid fertilizer for the floating seedling of the flue-cured tobacco; loading the vesuvianite particles into a disk and sowing, wherein the water content of the vesuvianite particles is appropriate when no sand is leaked from a bottom hole after the vesuvianite particles are loaded into the disk; placing the disk into a floating seedling pond, wherein water in the floating seedling pond is underground water or well water with the pH value of between 6.0 and 7.0; placing the nutrient fertilizer into the pond with the depth of 12cm according to the using amount of 2kg per cube of water on the day before the sowing; placing the nutrient fertilizer into the pond with the depth of 12cm according to the using amount of 1kg per cube of water on the 40th day after the sowing; controlling the seedling temperature to be between 27 and 32 DEG C and the relative humidity to be between 65 and 80 percent; and operating and managing other floating seedling steps according to the conventional method. The method has the advantages of low seedling and production cost, simplicity and convenience for operation, safety and no pollution and high and thick stems of the tobacco seedlings.