Pay attention to variety selection. When choosing the cowpea seeds, the vegetable farmer should select varieties according to the local people's consumption habits. Kidney bean seed color is divided into black, red, yellow, white, regardless of which color of the species to consider the early spring surface temperature is low, the sun is short, the temperature difference between day and night and other weather characteristics, should choose early varieties of cold. Summer sowing to choose some heat-resistant varieties. At present, in the production of black seed on the Qingliu No. 2, the yellow seed of the new special Qingyi Wang, yellow, white seed of the high yield crown and other varieties, both cold and heat-resistant characteristics.
Pay attention to understanding the growth habits. Kidney beans belong to thermophilic heat-resistant vegetables and are sensitive to low temperature. The whole growth period is about 100 days. The suitable plant growth temperature is 20°C-30°C and the harvesting period is 50-60 days. In early spring, it is generally planted on the mulch before and after mid-March, and the boiled soybeans must not be contaminated, requiring three years of rotation with other crops. Kidney beans should be watered in a timely manner, in the middle of the growing season, playing sharp tips to prevent leggy, and increase stem vines, increase production.
The early stage of growth focuses on the application of nitrogen fertilizer. During the middle and late stages, the application of phosphorus and potassium fertilizers is increased, and zinc fertilizer and calcium fertilizer are added appropriately. These measures can extend the growth period of cowpea and improve the quality of cowpea. Effectively strengthen the field management of cowpea and timely prevent and treat pests and diseases. To prevent the occurrence of excessive vegetative growth of Kidney Bean and affect the phenomenon of flowering and scabbing, control the growth of stems and leaves before scabbing. Excessive fat and water will lead to leggy, flowering and scabbing parts will move up, inflorescences will be reduced and yield will be reduced. In addition pay attention to the proportion of N, P, K fertilization, so that a balanced fertilization, to avoid pod bulging, drum grain.
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