First, avoid high temperatures. Beans do not like high temperatures, and higher temperatures often cause legume beans to grow and fall. The temperature in the spring shed is relatively high. If we do not pay attention to strengthening the ventilation, the flowering fruit setting rate of the bean will not be very high. Even if we sit down, it will fall and fall. Therefore, if you want to get high yield of kidney bean, it is very important to regulate the temperature of the flowering period. Under normal circumstances, the most suitable temperature during the flowering period of the bean is 20-24°C. When the temperature is higher than 24°C, the fruit setting rate will drop. If it is higher than 28°C, it will cause serious flower falling and falling down.
Second, avoid watering. Watering flowers during flowering will cause the beans to fall and fall. Therefore, watering must be prohibited during flowering. In order to prevent the beans in the shed from being overly arid during the flowering period, it is advisable to slip small water in the planting ditch before flowering to ensure that the soil in the flowering period of the bean does not get too dry.
Third, avoid boron deficiency. The lack of boron fertilizer is also one of the important reasons causing the falling of the beans. Therefore, the boiled bean must be supplemented with boron fertilizer before flowering. It can spray 600 times borax or 1200-1500 times the speed of boron, which can significantly increase the rate of flowering and fruit setting, and avoid falling flowers. It needs to be emphasized that the deficiency of boron in some vegetable fields is mostly caused by the impossibility of obstructing the ability of the roots to absorb the fertilizer due to the excessive drought in the soil. Therefore, the cowpea must pay attention to keeping the soil dry and wet.
Fourth, avoid using drugs. Bean should avoid the use of pyrimethanil, mancozeb manganese, anthraquinone Fumei, etchant Weiwei pharmaceutical ingredients, copper preparations should also be used in half. The bean flowering period is more sensitive to pesticides and is often susceptible to phytotoxicity, especially to pyrimethanil. Therefore, when the kidney beans are used, they must not choose the ingredients containing the above ingredients. Spraying these herbs will not only cause the leaves to yellow, but also cause flowers to fall. In addition, in the use of drugs, it should also pay attention to the chemical concentration of the liquid to be scientific and reasonable, the general flowering should stop spraying, so as to avoid the occurrence of phytotoxicity, resulting in the occurrence of cowpea flower falling down.
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