What are the factors in the greenhouse?
1. Nutritional factors, the flower bud differentiation of cowpea is relatively early, and the plant enters the vegetative growth and reproductive growth earlier, so the early stage of flowering often falls due to competition between vegetative growth and reproductive growth, spraying vegetables in the young fruit stage. Fruit Zhuang Ting Ling enhances the water absorption and fertilizer absorption of plants, enhances fruit yield and quality, reduces fruit drop rate, and reduces the incidence of cracked fruit, stiff fruit and deformed fruit.
2. The climatic factors are mostly due to the high temperature, which makes the flower development unfavorable and hinders pollination and fertilization. When the temperature in the shed reaches 28 °C, the flower will start to fall. If the temperature falls above 30 °C, the flower will be more serious. Therefore, gradually increase the ventilation during the period of 3-4 months, and spray the new high-fat film to spray the leaves of the field seedlings at the appropriate time to protect the seedlings. Body moisture, improve plant drought resistance factor and self-resistance. In addition, during the flowering and pod formation of cowpea, the relative humidity of the shed should be kept. If the temperature in the shed is high and dry, the drying of the style also affects the extension of the pollen tube. The relative humidity of the air in the shed should be maintained at about 70%, creating a Appropriate environmental conditions are essential to prevent the greenhouse from falling into the pods.
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