MySheen

Comprehensive management of flowering and podding stage of soybean

Published: 2024-11-05 Author: mysheen
Last Updated: 2024/11/05, Soybean enters the flowering and podding stage, during which vegetative growth and reproductive growth go hand in hand, which requires sufficient water, fertilizer and light conditions. In cultivation measures, the coordination of vegetative growth and reproductive growth should be achieved to achieve more pods and seeds. The main measures should be as follows-ldquo; three prevention-rdquo; and strengthen the management of seed filling and mature stage. & ldquo; three prevention & rdquo; measures at flowering and podding stage (1) prevent prosperous growth: when soybean has seen 2 bolts bloom, use 15% paclobutrazol wettable powder 30 grams per mu, 40 kg to water, spray seal

Soybean enters the flowering and podding stage, during which vegetative growth and reproductive growth go hand in hand, and sufficient water, fertilizer and light conditions are needed. In cultivation measures, the coordination of vegetative growth and reproductive growth should be achieved to achieve multiple pods and many seeds. The main measures should be to achieve the following "three prevention" and strengthen the management of grain filling and maturity.

"three prevention" measures during flowering and podding period (1) to prevent prosperous growth: when soybean has seen 2 bolts blossom, 30 grams of 15% paclobutrazol wettable powder per mu, 40 kg of water, spray capping, can shorten internodes, control top rattan, increase flowers and protect pods, reach the top of pods; (2) drought and waterlogging prevention: soybean flowering period, we should pay attention to summer drought and waterlogging, drainage and waterlogging in time in case of severe waterlogging (3) Pest control: from the end of July to the middle of August, soybean bridge insects, bean diamondback moth, leaf borer, alfalfa night moth and other pesticides with contact and stomach toxicity such as cypermethrin plus dimethoate or dichlorvos can be used to eliminate the pests in the first and second instar stage.

In this period, the vegetative growth of soybean stops gradually, and the reproductive growth is exuberant. In cultivation techniques, it is necessary to protect leaves and increase grain weight, and many pods are full, so it is necessary to strengthen management. Before the middle stage of grain filling, it is very sensitive to water and needs a lot of water. timely watering in case of drought can increase yield; foliar fertilizer is sprayed with 5 grams (1 pack) of green fertilizer per mu to 50 kg of water, or a mixture of 1% urea and 23% superphosphate is sprayed on the back of leaves after 4 p.m., and the effect is quite good. Late August is the peak period for bean pod borer and heart borer, and fenitrothion or phoxim emulsion can be used to spray water per mu.

Timely and moderate harvest of soybeans has strict requirements on the harvest time, when the stems and pods all turn yellow, the pod neutrons detach from the pod wall, all the bean leaves fall off, the plants are shaken by hand, and the seed water content is reduced to about 20%, which is the best harvest time.

 
0