Cowpeas are grown in summer, and their growth and development are in high temperature, strong light, and stormy seasons. The pods are short-lived, and the peak period of pod formation is mostly in the period of high temperature and frequent storms, resulting in low yield and instability, and field management. The difficulty is increased. In addition, summer is a period of serious disease, and it is a period of pest outbreak. Therefore, the sowing date should be arranged reasonably, and the resistant varieties should be selected and planted in deep ditch sorghum to reduce the occurrence of pests and diseases and ensure the normal growth of cowpea. 1. Site selection and fertilizer preparation (1) Land selection: Cowpea is as heavy as Other mites, because it is cultivated with cowpeas and there are a lot of germs and pests in the field. After the emergence of cowpea, the disease infects quickly, the insect damage occurs quickly, and the yield loss is serious. After the cowpea is harvested, the base of the pests in the field will increase. If the cowpea is planted here in the coming year, the disease of the cowpea will be serious, which will increase the dosage and frequency. It is difficult to achieve the harmful substances in the cowpea body does not exceed the standard. Therefore, the cultivation of cowpea should be changed with garlic and onion, or with grass crops for 2 to 3 years, which will greatly reduce the incidence of pests in the field. Cows should be planted in fields with fertile soil and convenient irrigation and drainage, and at least the fields that are not heavy in one year, which lays a foundation for reducing the use of pesticides and reducing pesticide pollution. (2) Site preparation: the depth of the plowing land in summer is more than 30 cm, and the field is 2 to 3 days in the field, and then the intensive cultivation is fine, and the soil is broken and the specifications are used for sputum. (3) Formulation of base fertilizer: generally apply 3,000-5000 kg of non-polluted farmyard manure, 30-50 kg of superphosphate, 150 kg of ash, 4000 kg of enzyme, or 301 60 kg of hydrogen carbonate. Ammonium 30 ~ 40 kg as a base fertilizer. After the specifications are made, the above fertilizer is applied to the furrow in the center. In this way, it is beneficial to reduce the loss of fertilizer, reduce the loss of fertilizer or leakage due to rain erosion, concentrate the supply of nutrients to the growth of cowpea, and improve the utilization rate of fertilizer. 2, select the variety The requirements for variety in summer sowing are: high pod yield, high temperature tolerance, long pod growth, high yield, good commercial properties of pods and strong resistance to stress. 3, deep ditch sorghum Cowpeas are planted in summer. Because of the heavy rain, they need to be planted with deep sorghum and sorghum when they are used for hoeing, that is, the sorghum surface is 15 cm high, the sulcus is 25 to 30 cm deep, and the sulcus is 30 to 40 cm wide. This kind of gully (carriage, ridge) is suitable for timely discharge of waterlogging and drought-resistant irrigation, promoting root growth, beneficial to root water-absorbing fertilizer, timely supply of water and nutrients needed by plants to ensure normal growth of cowpea. 4, timely seeding The timely sowing of cowpea in summer is essential for achieving high yield and high efficiency. Therefore, it is necessary to combine the best sowing growth period with the best harvest period and plant as much as possible before the rain increases, in order to obtain more pods. Summer sowing cowpeas are generally sown in May-July and are available in the off-season market from August to September. Seeding principle: First sowing late-maturing varieties, and then broadcasting early-maturing varieties. Seed treatment should be carried out at the time of sowing: remove the sorghum seeds, half-head seeds, mold seeds, miscellaneous seeds and other sundries. Generally dry seed sowing. The sowing requirements are sufficient. If the sputum is insufficient, the seedlings will be poor and the buds will be sprouted. The row spacing of the planted plants will be 60 cm × 35 cm. Seedlings will be planted in two rows, 2 to 3 seedlings per hole, and about 3,300 holes per mu. Visable Light Face Recognition Biometric Face Recognition,Facial Recognition Security,Visable Light Face Recognition,Door Access With Face Recognition GRANDING TECHNOLOGY CO LTD , https://www.grandingsecurity.com
