In response to the current soybean seedling growth trend and future weather trends, the Ministry of Agriculture's soybean expert group put forward the field management technical opinions focusing on “preventing pests, promoting early maturity and increasing grain weightâ€:
Timely drainage and flood control: There are more rains in the northeastern summer, and low-lying areas or plots that are prone to internal hemorrhage should be drained in time after rain. Measures such as mechanical drainage and trench drainage are adopted to eliminate water accumulation in the field and stagnant water in the plough layer as soon as possible. After draining, timely correct and straighten the plants, wash away the surface sludge, and restore the plants to normal photosynthesis as soon as possible.
Cultivating and weeding to promote growth: In response to the postponement of the sowing date in the north of the fourth accumulative temperate zone this year, the soybean seedlings are weak and the plants are growing too small. It is necessary to carry out cultivating, divergent and weeding as soon as possible before the soybeans are closed. Topdressing to promote soybean growth. At the same time, the soil is prevented from falling. In the middle and late stages of soybean growth, artificially remove the large grasses such as scorpion scorpion, Xanthium, sylvestris, scutellaria, orchid, thorn, and gray vegetables to increase ventilation and light transmission and promote soybean growth.
Foliar spray fertilizer promotes early maturity: spraying foliar fertilizer in the early flowering stage and the pod-forming stage can increase pod number and grain weight. Especially in the case that the birth process is generally late this year, the application of foliar fertilizer can speed up the birth process, promote the normal maturity of soybeans, and prevent early frost damage. Foliar application of urea plus potassium dihydrogen phosphate, the amount of urea per acre is 350 ~ 700 grams plus potassium dihydrogen phosphate 150 ~ 300 grams, and according to the situation of soil deficiency can increase micro-fertilizer. The general dosage is 25 g of ammonium molybdate and 100 g of borax . The mixture is sprayed with water. The spraying time is preferably after 4 pm, and the flowering period can be sprayed 2 to 3 times.
Timely harvesting and loss reduction: For normal mature varieties, when the soybean leaves are completely shed, the stems are dry, the grain is rounded to the color of the variety, and when the water content is less than 18% , mechanical or artificial harvesting is carried out. The standard of harvest requires that the cuts do not leave the bottom pods, do not throw branches, and strive to minimize the loss of the field, the comprehensive loss of harvest, the rate of breakage, and the face of the mud. For the late-maturing varieties, the method of segmental harvesting should be adopted, and the post-ripening should be promoted by threshing after drying.
Author: CITIC Source: Rural News
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