The effect of increasing the yield and income of autumn soybeans in rice field is good.

According to the experiment, after the middle rice is harvested, making use of the temperature and light conditions in the field, planting one season of autumn soybean can increase the yield of soybean by 60,120kg / mu and the economic income of 150,420 yuan / mu. It is suitable to be popularized in the regenerated rice areas below 400 meters above sea level. The main technical points are as follows:

After rice seeds are scattered, ditches are opened for drainage; after rice harvest, weeds and rice piles are removed in time without ploughing, and the box is opened according to 110 cm of line, with a width of 86 cm, and a ditch of 26 cm in depth and 26 cm in width between the two carriages. Select early-maturing varieties with short growth period.

Second, reasonable close planting: the sowing of autumn soybeans should be completed in the first and middle August after the harvest of medium rice. Generally, the amount of seed used per mu is 7 Mu and 8 kg. Before sowing, mix bean seeds with 10 grams of ammonium molybdate per mu. On the surface of the paddy field, direct seeding was conducted according to the row spacing of 20 × 30 cm, with 4 seeds per nest, and more than 25000 seedlings per mu. And cover the nest with 30 kg of superphosphate, 150 kg of plant ash and 800 kg of fine residue fertilizer.

Third, fertilizer and water management: before emergence, the fields with dry soil were drenched with clear dung water twice to promote germination and emergence. After emergence, timely check the deficiency of seedlings and inter-seedlings, it is appropriate to leave 3 bean seedlings per litter. When the first compound leaf was unfolded, one quick topdressing was applied, 900 kg of human and animal water manure plus 5 kg of urea per mu, and 600 kg of human and animal water manure per mu when the seedling height was about 25 cm. At the same time, ploughing weeding, cultivating soil and protecting seedlings were carried out.

Fourth, pest control: at the beginning of September, 150ml / mu of chemical recording fruit was sprayed with 15ml of permethrin and 50kg of water to control bean leaf borer and bean stem fly; podding period in late September, combined with weeds in the field, 150ml of chemical recording fruit was sprayed with 50kg water per mu to control bean pod borer.

Fifth, timely harvest: the whole growth period of autumn soybean is about 80 days. Generally, in the first and middle of November, about 2 big 3 pods on the plant can be harvested when they are yellowish brown. "Ningzhen No.1" is a conventional species, and large and full beans can be selected for seed use in the second year.