Summer soybean Yuhang 4 yield 400 kg cultivation technology
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Summer Soybean yields 400 kg Space No. 4 cultivation techniques Source: Tongshan County in Jiangsu Province Institute of Agricultural and Forestry Crop Breeding: from Guo Feng Yu Teng Huguo In recent years, the soybean crop as an economic, high-yielding varieties of its research and its high yield cultivation techniques became popular . Liuji Agricultural High-tech Park in Tongshan County, Jiangsu Province, under the guidance of the Jiangsu Provincial Agricultural Technology Station and the Provincial Center for Science and Technology Poverty Alleviation and Development, in 2002, a new high-yield soybean variety, Yuhang No. 4, was introduced from the China Space Breeding and Breeding Center for trial production. better. In 2004, 400 kg of high-yielding cultivation techniques were researched and a record of 447 kg of super-high yield was obtained. The specific approach is: (a): meticulous site preparation, adequate base fertilizer. The high-yield research area is located in the Liuji Agricultural Hi-tech Park with a total area of ​​15 mu. It has been abandoned for many years and the fields are overgrown with weeds. May 20 began to find workers to cut off the weeds in the ground. On May 28th, the base fertilizer was applied at a rate of 3 to 5 cubic meters per hectare of organic fertilizer, 40 kg of diammonium phosphate and 15 kg of potassium sulfate. After mixing, it was applied to the surface, and then it was rotated with a rotary tiller. Hand-operated tractors were used to carry out radon treatment, and the field debris and grass roots were detected. The ridging took place on June 8 with a ridge height of 25 cm and a ridge width of 70 cm. (B): Seed Treatment Seeds before sowing can effectively increase the germination rate, then use Rhizobium dressing. The method is: According to the standard of 500 grams of bacteria powder for every 25 kilograms of seeds, the bacteria powder is first stirred with 0.5 kilograms of water to form a paste, uniform seed dressing under dark light conditions, and sowing after drying. (3) Timely sowing and reasonable density summer sowing should be completed before June 20 so that Yuhang 4 can accumulate more nutrition and lay a foundation for high yields. 3 tablets with spacing of 40*30 cm. Immediately after the emergence of seedlings, holes and line breaks should be promptly transplanted with water to ensure that the number of seedlings in the field is around 4500--4800. (D): After weeding, weeding and cultivating tilling, we use acetochlor to seal off the soil after planting. After 10 days of spraying, we carry out one cultivator and combine ridges with soil to maintain the height and thickness of the original ridge. (5) Management Measures Although Aerospace No. 4 is a limited-growing species, timely and timely picking and control can increase production and have a significant effect. Method is: When the seedlings grow to 30 cm high, there are more than 8 leaves, select the sunny day at about 10 o'clock to remove the top heart, can promote its more flowering and more results; multi-effect setback control should be in the early flowering period, the concentration of 0.01--0.02%, plus 0.05% ammonium molybdate spray, the effect will be better. From the flowering stage to the grain stage, the standard of 667 square meters of potassium dihydrogen phosphate 200 grams plus borax 100 grams, sprayed every 7 days, and sprayed 3 to 4 times, the effect of increasing production is quite obvious; timely removal in the late growth period Yellow leaves, to ease the field cover, to achieve the purpose of ventilation and light production. In addition, in the case of drought in the growing season, it is necessary to water in a timely manner. When watering, it is best to use micro-spraying or irrigating horse water, and it is forbidden to accumulate water in the field. Usually, timely prevention and control of pests and diseases, such as imidacloprid control whiteflies and aphids; Prevent and treat snails; use black light lamps to slay and kill pod moths; use special bacteriostatic sprays to prevent stalk rot; use plant disease and disease emulsions to prevent viral diseases. In 2004, we seized the above measures to increase the number of astronauts on the 4th astronautics 4 to 10, and the school’s control group (Aviation 4 grown by the farmers in a conventional way) increased by 4; About 60 more than the control group; plant height 60 cm, 20 cm shorter than the control group; 100-grain weight 40 grams, 2 grams more than the control group; equivalent to 447 kilograms of yield, compared with the control group more than 150 kilograms. From this it can be seen that as long as the aerospace 4 is scientifically cultivated and managed, the technology, combined with its strong branching and potential for increased yield, can be reasonably controlled and can produce 400--450 kilograms per 667 square meters.