Greenhouse vegetables produce herbicides
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First, the cause of serious injury: 1. High temperature inside the greenhouse, good fresh water conditions, high humidity, is conducive to give full play to the efficacy of the herbicide serious injury. 2. Sulfonylurea herbicides are mainly used for the control of broad-leaved weeds, but broad-leaved vegetables are also very sensitive to it. 3. Many vegetable varieties in greenhouses are cultivated in three-dimensional scaffolds, and the liquid medicine is easily distributed to various places and drifts to young parts. The occurrence of phytotoxicity is large and heavy. 4. Herbicides are mostly used in field crops, with less use of vegetable fields and fewer greenhouse vegetables. Therefore, vegetables in greenhouses are poor in drug resistance and serious injury occurs.
Second, the remedies for injury: 1. Vegetable fields with serious injury can not be recovered, and can be immediately removed and replanted (from 30 days after application). Soybean and other leguminous vegetables can be grown. 2. Poisonous land immediately spray poison and plant physiological regulators, such as auxin, gibberellin, cytokinin, to prevent organ loss, can promote cell division, inhibit aging. 3. Strengthen management of water and fertilizers. Fertilizers are mostly foliar fertilizers and micro-fertilizers containing zinc and iron.
