MySheen

Three "early" soybeans planting

Published: 2024-11-05 Author: mysheen
Last Updated: 2024/11/05, First, early chemical removal. 3-4 days before seedling emergence after sowing, 50% Acetochlor EC 100-150 ml / mu was used to seal the soil of 30-40 kg of water. If there are weeds in the field at the time of application, 20% g 100 ml / mu can be mixed with it. If the soybean has emerged and there is no time for soil closure, 10% grass EC 60-75ml / mu, or 15% EC 60-75ml / mu, or 12.5% grass energy EC 60-75ml / mu, 40% water can be used.

First, early chemical removal. 3-4 days before seedling emergence after sowing, 50% Acetochlor EC 100-150 ml / mu was used to seal the soil of 30-40 kg of water. If there are weeds in the field at the time of application, 20% g 100 ml / mu can be mixed with it. If the soybean has emerged and there is no time to seal the soil, 10% grass EC 60-75 ml / mu, or 15% EC 60-75 ml / mu, or 12.5% grass energy EC 60-75 ml / mu, 40-50 kg of water can be used for stem and leaf treatment. If monocotyledonous and dicotyledonous weeds are mixed, one of the above agents can be mixed with 40% atrazine 80-100 ml / mu, or 25% Huwei 80-100 ml / mu.

Second, set the seedlings early. According to the experiment, the suitable fixed seedling can increase the yield by about 8% and 17% compared with the late fixed seedling. In order to avoid the emergence of linear seedlings and high-legged seedlings, the seedlings should be firmly fixed at the time of 3 leaves and 1 heart. The fixed seedling density should be different from different varieties and different soil fertility, such as Yudou 22, 25 and 16, 10000-12000 plants / mu, 12500-13500 plants / mu, dry and thin land, early-maturing varieties, such as Yudou 20, 23, 15, 14000-16000 plants / mu.

Third, early promotion and control. In the early flowering stage of soybean, if the plant is thin and short, the leaves are small and thin, and the leaves are yellow or light green, nitrogen and phosphorus combined with chemical fertilizer should be applied, 10-20 kg per mu, with diammonium unilateral ditch, which can effectively reduce the shedding of flowers and pods and promote vegetative growth. the effect of foliar spraying with activating element is better. If the plant is overgrown and closed, spraying paclobutrazol 150 mg / kg or 200 mg / kg at the early flowering stage can inhibit plant height, control Internode elongation and reduce growth rate.

The standard appearance of soybean in the early stage should be: bright green leaves, thick leaves, well-developed roots, more dry matter, steady growth and development.

 
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