In recent years, the development of soybeans in northeastern Sichuan, especially the “wheat/jade/bean†planting model, has achieved remarkable results in cultivation management techniques and gained a lot of experience, but it still cannot relax the soybean cultivation field management technology, farmers friends. We should seize the timely cultivation of soybeans after harvesting wheat and strengthen field management to capture the high yield and increase of soybeans this year.
Uniform seed weeding
Uniform seedlings: According to the growth of corn and soybean in the field, timely and uniform seedlings, planting 1 to 2 rows per plant, or nesting above 1.2 feet, leaving 3 seedlings per litter; 3 rows per seed, or a nest spacing of 1.1 to 1.2 Below the ruler, leave 2-3 seedlings per litter. Lack of seedlings can be evenly reinforced and replanted.
Clearing weeds: Since soybeans are generally used for on-demand or digging in the nest, most places do not use herbicides before sowing, resulting in more weeds in the field, affecting the ventilation and light transmission of soybeans, and intensifying pests and diseases. At present, artificial weeding or herbicide chemical weeding should be carried out in time. When chemical weeding, use 100-133 ml of acifluorfen (weed burning, mine just) 21.4% water agent per acre, or 17-33 grams of tiger Wei (fluorine) Sulfasalate, in addition to soybean meal, Polaris), or 35% flurazepam (stable, flufenic acid) emulsifiable concentrate 50-70 ml, evenly sprayed on weed stems and leaves.
Prevention of pests and diseases
The main pests and diseases of soybeans include soybean mosaic virus disease, aphids, red spiders, snails, and blind mites.
Soybean mosaic virus disease: timely treatment, control of the media. In the early stage of the disease, spray 2 times with 2% Ningnanmycin water 200 times solution, and then apply once a week after the diseased area.
Red spider control: According to the occurrence characteristics of soybean red spider in the field, it should be carried out in the early stage of its occurrence, that is, it is found that the soybean plants start spraying when there are yellow spots in the leaves. Choose a sunny, windless afternoon application, and apply it simultaneously with the back of the middle and lower leaves of the corn. The available agents are: 1.8% worm (avermectin) emulsifiable concentrate or 15% lingual (Morning Star) emulsifiable concentrate or 73% gram emulsifiable concentrate, which is applied to water at the recommended dosage.
Locust: When there is a sputum rate of 10%, the 5% is mixed with 5% imidacloprid WP or 50% anti-Converse WP 15 to 30g with water 50-60kg. Harmful mollusc control: During the snail-producing period, apply 6% of the cytotoxic granules per mus to 500 g per day, or use 6% tetraacetaldehyde GR (Midda) or 90% crystal trichlorfon 1500 times. Liquid leaf spray.
At the late stage of growth, attention should be paid to the prevention and control of insect pests such as pea pods, soybean borer, soybean aphids, red spiders, and cockroaches. Bean pods can be sprayed with 2.5% enemy killing emulsifiable concentrate 20 ml or 5% of Fuling emulsifiable concentrate 20 ml with water 50-60 kg in the soybean pod-forming period; the soybean borer can be controlled by dichlorvos fumigation.
Topdressing
The survey found that most farmers have the habit of not applying fertilizer when planting soybeans. In order to further increase the yield and enhance the resistance, the seedling fertilizer should be applied before the branching, mainly phosphorus and potassium fertilizer. Mu Shi Sanyuan compound fertilizer (N: 13%, P2O5: 5%, K2O: 7%) 10-12 kg, superphosphate 25-30 kg; or acres of calcium phosphate 35-40 kg, potassium chloride 4 -5 kg. After the corn is harvested, depending on the growth of the field, 3-4 kg of urea or the manure water is applied directly to the field after the rain is weak.
Controlling against
The field where the corn grows well, the soybean shade is large, and the high-footed seedlings have been formed can be controlled by chemical regulation. The auxiliaries are 8-10 g or uniconazole (Youkang) 1-2 g, and sprayed with water.
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