In the individual rice bean rotation areas in the northeastern region, land plots such as fomesafen, chlorhexidine, and atrazine are prone to occur, and remedial measures can be taken depending on the degree of phytotoxicity.
After the occurrence of phytotoxicity, some high-efficiency plant growth regulators such as eucalyptol and Bishui can be used to spray the fertilizer on the surface, and the active ingredient is 0.136% Biwet WP 1-3 g. 15 kg of water.
After 7 to 10 days, according to the situation, spray potassium dihydrogen phosphate, spray the amount of 0.16 ~ 0.2 kg per acre, can effectively promote the rapid growth of corn and soybeans.
In addition, due to the long-term use of long-term use of atrazine and its compound preparations in the corn field, long-term residual herbicides such as post-emergence nicosulfuron and mesotrione, the herbicide remains in the soil, so that after replanting The crops have successively suffered from phytotoxicity, especially the millet and sorghum cultivars that have been replanted this year. The phytotoxicity is widespread and heavier. When it is found that the crops in the field have yellowing, wilting, deformity and other symptoms of phytotoxicity, it is necessary to promptly carry out remedial prevention and control, and the prevention and treatment methods are as follows:
1. The agent may be selected from 0.136% red å²â€¢èŠ¸è‹”ç´ (碧护) or 5% amino oligosaccharide or brassinolide, such as plant immune inducers and growth regulators.
2. The fertilizer can be selected from “potassium dihydrogen phosphate†and full-nutrient foliar spray fertilizer (spraying, etc.).
The above-mentioned agent and fertilizer are mixed and foliar spray can alleviate the phytotoxicity, improve the stress resistance, regulate and promote the growth of the crop.
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