At the moment, spring sowing beans have entered the peak of the pod, this stage is a critical period to increase production. The following are the management points for this phase:
Adjust the plants. Cowpea needs to have a support for support. When the bean vines are covered with a stent, the top method can be used to promote the germination and growth of the side shoots. For plants that are prosperous, reduce the amount of nitrogen fertilizer or spray plant regulators such as chlormequat. Remove the old leaves, diseased leaves or residual leaves in time to ensure that the scaffolding is well ventilated and transparent.
Water and fertilizer management. Cowpea roots are weak, not drought-tolerant and not resistant to sputum, and the soil should always be kept dry to see wet. The pod-forming period is also a period in which cowpea is very sensitive to water and fertilizer. If the supply of water and fertilizer is insufficient, it is difficult to guarantee its yield and quality. To this end, when cowpeas are finished at the end of the flowering period, it is necessary to strengthen water and fertilizer management during the pod-forming period. On the basis of the application of the base fertilizer, combined with watering, each application of 15 kg of nitrogen and potassium fertilizer per mu, or 10 kg of urea, 5 kg of potassium sulfate, evenly spread. After entering the pod-filling period, it is necessary to topdress once every 10 days.
Prevent disease and cure insects. The common diseases of cowpea are mainly viral diseases and rust diseases. Sustained high temperature and drought is prone to viral disease, and can be controlled by 300 times of virus A or 500 times of phytopathogenic spray. It is easy to induce rust in high temperature and high humidity environment, and it can be controlled by triazolone spray. Common pests are mainly aphids, red spiders, and pea pods. The control of aphids can be controlled by 10% imidacloprid, 10 grams per acre of water spray. Use the scorpion spray to control the red spider, focus on the back of the blade when spraying. The use of beta-cyhalothrin 1000 times solution to control pea pods. Spray once every 7 to 10 days and continue to take 2 to 3 times.
Spray the leaf fertilizer. After entering July, there will be a high temperature above 30 °C, high temperature and strong light will have adverse effects on the pod-forming period of cowpea, causing the fall and premature aging. The method of mixing boron fertilizer and potassium dihydrogen phosphate can be used to reduce the adverse effects, and 30 kg of fertilizer solution per mu is sprayed once every 10 days.
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