Planting technology of cowpea in greenhouse

Planting cowpeas in the greenhouse requires reasonable close planting to prevent leaves from blocking each other's light. It can be planted in ridges of 70 cm and 50 cm, with a distance of 27-30 cm and 2-3 plants per hole. It is necessary to strengthen heat preservation measures in winter, appropriate watering in summer and reasonable ventilation after topdressing. Due to the temperature of the greenhouse, the problem of pest control can not be ignored.

Planting technology of cowpea in greenhouse

1. Reasonable close planting

Because the overwintering cowpea is in the environment of low temperature and low light during the growing period, the photosynthesis is blocked and the nutrition of the plant itself is limited, so it must not be too dense when planting to prevent the leaves from blocking each other's light. Generally take 70 cm, 50 cm ridge planting, hole distance 27-30 cm, each hole 2-3 plants, watering after planting, and spraying new high-fat film can effectively prevent aboveground water from evaporation, seedling water does not transpirate, isolate diseases and insect pests, shorten slow seedling period, make plants grow and cover plastic film after hoe.

2. Field management

In winter, we should strengthen the measures of heat preservation and anti-freezing, strengthen the daylighting of the greenhouse, often wipe the greenhouse film and improve the light transmittance; in the management of fertilizer and water, we should water as little as possible, and timely spray Huawang No. 3 to restrain the growth of the main shoot and promote the differentiation of flower buds. Before the cowpea was planted on the shelf and before the cowpea blossomed, 15 kg of ammonium sulfate was applied per mu. At the same time, the vegetable fruit Zhuangtiling was sprayed to improve the pollen quality, enhance the cyclic fruit setting rate, and topdressing every 10-15 days, with 15-20 kg of ammonium sulfate each time. Carbon dioxide gas fertilizer can be applied on a sunny day after flowering and properly ventilated 2 hours after application; cowpea plant senescence and root aging can be sprayed with 0.2% potassium dihydrogen phosphate plus 800-fold solution of new high-fat membrane for foliar fertilization in order to prolong pod formation.

3. prevention and control of diseases and insect pests

Cowpea planted in greenhouse is prone to rust, leaf mold, anthracnose, leaf spot and so on because of its low temperature and high humidity environment and poor ventilation. Aphids and bean pod borer are the main pests. Timely spraying of targeted drugs and new high lipid film can improve the efficacy, achieve the best control effect, and reduce the number of pesticide spraying and pesticide residues.