How to prevent and cure the falling flowers and fruits of beans?

What is the cause of falling flowers and fruits in beans? How to prevent and cure the falling flowers and fruits of beans? Also ask experienced netizens to help introduce beans with stomach and kidney, contains easy to digest and absorb protein, but also contains a variety of vitamins and trace elements, phospholipids can promote insulin secretion, is an ideal food for people with diabetes. However, in the process of bean planting, flower and fruit drop will lead to a substantial reduction in bean production, so the farming network sorted out the causes and control measures of bean flower and fruit drop, which are listed in detail below for netizens' reference. 1. The reasons for the drop of beans: 1. The temperature during the seedling period is often lower than 10 ℃ due to the blocking of flower bud differentiation, which may lead to abnormal flower bud differentiation and cause flower and fruit drop. The temperature is too high, the water and fertilizer are too large, the flower bud can not get sufficient nutrients when the seedling is growing, and the hindrance of flower bud differentiation can easily lead to flower and fruit drop. Reason 2, drought and lack of water and lack of light will also cause poor flower bud differentiation, causing flower and fruit drop; reason 3, during the growing period, the vegetative growth of plants is too prosperous, which inhibits reproductive growth, and when nutrition is concentrated on stems and leaves, it is also easy to drop flowers and fruits, especially in the vine-throwing period. early topdressing and watering often lead to overgrowth and fruit drop Reason 4, high temperature, drought, lack of fertilizer or nitrogen fertilizer during the growing period can easily cause flower and fruit drop; reason 5, continuous low temperature and cloudy days, cause flower drop and fruit drop; reason 6, the drop of flowers and fruits caused by gas concentration discomfort is mainly due to the lack of carbon dioxide in the greenhouse; the drop of flowers and fruits caused by excessive close planting; reason 7, the drop of flowers and fruits caused by untimely harvest Cause 8. Flower and fruit drop caused by diseases and insect pests, such as root rot, anthracnose, corner spot, Fusarium wilt and gray mold, the disease directly affects the leaf, rhizome vascular tissue and tender horn, affecting photosynthesis, affecting the transport of substances and the normal development of tender horn. Aphids and whitefly are also caused when the damage is serious. Second, measures to prevent and control the falling flowers and fruits of beans: 1. The measures of cultivating strong seedlings can be taken to solve the falling flowers and fruits caused by the hindrance of flower bud differentiation. During the seedling period, temperature, humidity, light and fertilizer should be strictly controlled to cultivate strong seedlings. Measure 2, the drop of flowers and fruits caused by excessive vegetative growth can be solved by coordinating reproductive growth and vegetative growth. Such as postponing the topdressing and watering period, controlling the application of nitrogen fertilizer and so on. It has been found that the plant growth is prosperous, when the plant Internode is too long, the growth is weak, when there are signs of overgrowth, 20 mg / kg of dwarf can be sprayed to inhibit overgrowth. Measure 3. The drop of flowers and fruits caused by lack of fertilizer or excessive can be solved by lowering the temperature, timely irrigation and increasing the application of phosphorus and potassium fertilizer. Measure 4. The flower and fruit drop caused by low temperature and low light can be foliar sprayed with 1% potassium dihydrogen phosphate + 1% glucose + 1% urea (mainly used in the seedling stage). Measure 5. The falling flowers and fruits caused by diseases and insect pests can be solved by strengthening the prevention and control of diseases and insect pests, spraying some plant growth regulators, strengthening fertilizer and water management, improving disease resistance of beans, promoting healthy growth and so on. The method of cowpea planting technology video to make beans produce more beans