Cowpea is a commonly used vegetable. With the development of vegetable processing industry, cowpea is more and more in short supply with some vegetables. How to increase the yield of cowpea and improve the quality of cowpea? The author combines years of experience in promotion and practice, and believes that the following three should be grasped. Key technical measures:
1. Choosing a good species: In the early spring and late autumn, the surface temperature is low and the sunshine is short. Some cold-tolerant and early-maturing varieties should be selected, and the better-performing varieties are Yangyan12. Due to the high temperature and long sunshine, the summer sowing should choose some heat-resistant varieties, and the better-performing varieties are Yangjing 40.
2, formula fertilization off: cowpea vines, vegetative growth and reproductive growth period is longer, so pay attention to the basic fertilizer and foliar fertilizer. In the base fertilizer, the proportion of phosphorus and potassium fertilizer is increased in an appropriate amount, and the proportion of nitrogen fertilizer is reduced to prevent the later growth and short flowering period of cowpea, thereby affecting the yield of cowpea; in the later stage, combined with pest control, the amount of foliar fertilizer can be increased. Extend the growth period of cowpea.
3, field management: focus on pest control, cowpea afraid of water, clear ditch drainage can promote the healthy growth of cowpea, but also improve the disease resistance of cowpea. In July and August of each year, it is a prone period of cowpea pests and diseases, and its pests and diseases mainly include downy mildew, rust, aphids, and cabbage caterpillars. The control method is: the disease is sprayed with a bactericidal agent such as fluoromanganese zinc or triazolone; the insect pest is sprayed with Kaiwei 168, avermectin and the like to kill insects. It should be noted that the spray insecticide must be selected at 8 and 9 in the morning to be effective in flower, flower and fruit. In order to delay premature aging, 200 g/mu of potassium dihydrogen phosphate can be added to the liquid to increase the yield.
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