37results about How to "Reduce planting density" patented technology

The invention discloses a method for planting ramie in middle-level heavy metal contaminated soils. The method comprises the following steps: A, selecting a specific variety of ramie with high resistance against heavy metal contamination and cultivating strong ramie seedlings by using a young shoot cottage propagation technique; B, constructing a ramie garden and applying a passivator to reduce the activity of heavy metal in soils; C, transplanting in right time and carrying out rational close planting; D, scientifically carrying out cross dressing and cracking stems in right time; and E, preventing and controlling insect disease prevention in time and strengthening winter cultivation management of the garden. Practical results show that the yields of the newly planted ramie garden in the current year and the next year are respectively 75.1-78.4kg / mu and 88.8-91.7kg / mu which are the same as or even higher than those of the newly planted ramie garden with clean soils at the same term; moreover, the heavy metal content of raw ramie can be controlled in a range specified in related standard, and the safe and efficient agricultural utilization of middle-level heavy metal contaminated soils is realized. The method is simple and convenient in technique and easy to implement; moreover, the effect of the method is even higher if applied to the mild heavy metal contaminated soils. The method has a broad application prospect in mass areas with heavy metal contaminated soils.

The invention relates to a system and method for cultivating black-spotted frogs in paddy fields, including a rice planting mechanism, a black-spotted frog breeding mechanism and an escape prevention mechanism. The rice planting mechanism includes a rice planting area and rice; the black-spotted frog breeding mechanism includes settings In the ditch in the middle of the rice planting area, the water ditch vertically runs through the rice planting area; the black-spotted frog breeding mechanism also includes a feeding platform arranged around the rice planting area, and the feeding platform is used for feeding black frogs. Foodstuffs required by spotted frogs; the rice is planted in two rows, and the rice is planted in close proximity to the ditch area, and the planting density at the end far away from the ditch decreases in turn; the escape prevention mechanism includes escape prevention baffles arranged around the feeding platform. In the present invention, water ditches are set in the middle of the rice breeding area, and the black-spotted frog is cultivated while rice is planted, and the black-spotted frog is an insect-catching expert in the rice field, and the pests of rice are not only the bait of the black-spotted frog, but also the black-spotted frog. The excrement is also an organic fertilizer for rice.

The invention relates to the field of water environment treatment, and specifically discloses a system and method for restoring river and lake water bodies by a floating water purification plant. The method includes: (1) under the action of a water pump, the river and lake water body is filtered through a grid; (2) using the water pump, the filtered water body is extracted to the ss sedimentation tank through the water inlet pipe; The pre-magnetization device in the water body completes the pre-magnetization in the water inlet pipe; (3) the water body after pre-magnetization treatment enters the ss sedimentation tank to remove particulate matter in the water body; (4) the water body after the ss sedimentation tank enters the magnetizer Carry out magnetization treatment in the center, the magnetic field strength is 50mT~2000mT; (5) Distribute the water body after magnetization treatment on the upper part of the floating purification field. According to the different growth periods of aquatic plants, the present invention adjusts the magnetic field strength of the magnetizer to magnetize the water body, induces the growth of plants and beneficial indigenous microbial flora, and strengthens the purification ability and reliability of the ecological floating bed technology.

The invention discloses a soybean-interplanting high-yield planting method for seed production spinach. The method includes the steps that spinach varieties which are resistant to disease, high in yield and stress resistance and good in commodity and soybean varieties which are wide in adaption, resistant to lodging and moderate in duration period are selected; in late February to beginning of March, base fertilizer applying is carried out in cooperation with spring ploughing and soil harrowing, leveling and preparation, and soil harrowing, leveling and preparation are carried out in time after fertilizer applying; seed dressing is carried out with nitragin before soybeans are seeded, and seeding can be carried out when seeds are dried in the shade; timing seeding is carried out, spinach is planted in an even-row mode, the row spacing is 50 cm to 60 cm, a row of soybeans are interplanted in rows, and the soybeans are 25 cm to 30 cm away from the spinach; or spinach is subjected to wide-narrow row planting, the narrow row spacing is 30 cm, the wide row spacing is 60 cm to 70 cm, two rows of soybeans are interplanted in wide rows, the soybean row spacing is 30 cm, and the soybeans are 20 cm away from the spinach; the soybean plant (hill) spacing is 13 cm; reasonable field management is carried out till harvesting is carried out. According to the high-yield planting method, coordinating yield increasing function of soybean-interplanting seed production spinach is fully developed.