For many years of continuous planting, it is likely to cause some old vegetables growing vegetables, the soil environment is deteriorating, the pests and diseases of vegetables are becoming more and more serious, and large-scale vegetable plants die, which greatly affects the vegetable planting efficiency. The performance of soil degradation mainly includes the following: First, increased nematodes, pathogens, and residual toxins; second, soil compaction, lack of organic matter; third, increased soil salinization; fourth, lack of trace elements; and fifth, shallowing of mature soils. . Measures for the control of soil deterioration: First, it is a turn for the worse. Such as melons and onions and garlic rotation, can reduce the base number of diseases and insect pests, reduce the occurrence of pests and diseases, reduce the toxic effects of toxins, and onion and garlic can absorb large amounts of melon can not absorb the small fertilizer, full use of fertility. The second is to re-apply organic fertilizer. Organic manure improves the structure of soil aggregates, enhances soil water retention, fertilizer retention, and heat storage capacity, loosens soil, reduces soil salinization, promotes root development of vegetables, and increases their ability to resist disasters. The third is a high-temperature stuffy shed to eliminate pests and diseases. During the summer leisure period of greenhouses, appropriate insecticides and fungicides should be applied, mixed into the topsoil, filled with water, and covered with plastic film for 20-30 days. The fourth is to apply appropriate amount of trace fertilizer. For example, 0.1-0.2 kilograms of boron fertilizer is applied per acre and 1 kilogram of zinc fertilizer is applied. The fifth is deep turning and thickening of the soil layer. Combined with fertilization, deep-slope the soil 30 cm to enhance soil water retention and fertility. Usually, when flooding sauerkraut, flooding should be prohibited. This can reduce the air humidity in the shed, and it can be watered according to the weather, the soil water supply capacity and the amount of vegetable water. Watering time is generally selected on a sunny morning, avoiding the high temperature of the soil, closing the greenhouse after irrigation, heating and then reducing humidity, while strengthening the construction of drainage facilities to prevent the soil due to excessive water, decreased air permeability. Lappaconite Hydrobromide,Lappaconite Hydrobromide Powder,High Purity Lappaconite Hydrobromide,Cas 97792-45-5 Shaanxi The River Pharmaceutical Co., Ltd. , https://www.dahepharma.com