Recently, many farmers have consulted on cotton deformities. According to investigations, the area of ​​occurrence of cotton malformations has been continuously expanding in recent years, especially since last year, and the occurrence of heavier strains has caused the growth and development of cotton to be hindered and the yield and quality have declined. The reason for this is mainly due to drug injury. The remedies for drug damage are now proposed for the reference of cotton farmers.
After the occurrence of phytotoxicity in the cotton plants in the field, the leaves showed chicken claws and the leaves became smaller and thicker. The top stalk is slightly curved, the growth point is developing slowly, and many delicate shoots are produced in the leafhopper. A large number of flower buds fall off, and if it is not remedied in time, it is difficult to take peaches for a long time, resulting in low yield and poor quality.
cause
1, equipment cleaning is not clean. Due to the rapid development of herbicides in recent years and the increasing number of species, the scope of use has rapidly expanded. In particular, the use of herbicides in wheat has increased. However, some farmers only had one sprayer. They did not clean the equipment in time after spraying the herbicide on the wheat field, and sprayed the cotton with the device containing the herbicide residue, causing phytotoxicity.
2. The concentration of pesticides used is too large. Some farmers in the use of pesticides to prevent pests and diseases, can not be used in accordance with the concentration indicated in the instructions, arbitrarily increase the concentration, resulting in the occurrence of phytotoxicity.
Remedy
1, cleaning prevention method. After sprayed with wheat field herbicide, the sprayer should be rinsed clean with clean water immediately. Before spraying other pesticides, the sprayer should be washed several times to prevent phytotoxicity caused by herbicide residues.
2, spray cleaning method. If it is found to be timely, immediately spray clean water, spray once a day sooner or later, and even spray for 3-4 days, can effectively control the development of phytotoxicity and reduce the damage caused by phytotoxicity.
3, hormone remission method. After the occurrence of phytotoxicity, Qibao (900) hormone plant growth regulators were promptly sprayed to ease the degree of phytotoxicity and promote growth. Generally, the spraying concentration was 40ppm.
4, fertilizer to promote seedling law. After the occurrence of phytotoxicity, the growth and development of the plants is hindered and nutritional supplements should be given in time. First, foliar spray fertilizer can be sprayed with dryland 500 times liquid or Huimanfeng 600-800 times liquid to quickly add nutrients; second, soil topdressing, topdressing urea by 5-6 kg per acre, to promote plant growth, Reduce the extent of injury.
5, cultivating loose soil method. Soil cultivating in row, breaking soil compaction, enhancing soil permeability, promoting beneficial microbial activity, accelerating the decomposition of soil nutrients, enhancing the absorption capacity of roots for nutrients and water, enabling plants to restore growth and development as soon as possible, reduce the damage caused by drug damage.
After the occurrence of phytotoxicity in the cotton plants in the field, the leaves showed chicken claws and the leaves became smaller and thicker. The top stalk is slightly curved, the growth point is developing slowly, and many delicate shoots are produced in the leafhopper. A large number of flower buds fall off, and if it is not remedied in time, it is difficult to take peaches for a long time, resulting in low yield and poor quality.
cause
1, equipment cleaning is not clean. Due to the rapid development of herbicides in recent years and the increasing number of species, the scope of use has rapidly expanded. In particular, the use of herbicides in wheat has increased. However, some farmers only had one sprayer. They did not clean the equipment in time after spraying the herbicide on the wheat field, and sprayed the cotton with the device containing the herbicide residue, causing phytotoxicity.
2. The concentration of pesticides used is too large. Some farmers in the use of pesticides to prevent pests and diseases, can not be used in accordance with the concentration indicated in the instructions, arbitrarily increase the concentration, resulting in the occurrence of phytotoxicity.
Remedy
1, cleaning prevention method. After sprayed with wheat field herbicide, the sprayer should be rinsed clean with clean water immediately. Before spraying other pesticides, the sprayer should be washed several times to prevent phytotoxicity caused by herbicide residues.
2, spray cleaning method. If it is found to be timely, immediately spray clean water, spray once a day sooner or later, and even spray for 3-4 days, can effectively control the development of phytotoxicity and reduce the damage caused by phytotoxicity.
3, hormone remission method. After the occurrence of phytotoxicity, Qibao (900) hormone plant growth regulators were promptly sprayed to ease the degree of phytotoxicity and promote growth. Generally, the spraying concentration was 40ppm.
4, fertilizer to promote seedling law. After the occurrence of phytotoxicity, the growth and development of the plants is hindered and nutritional supplements should be given in time. First, foliar spray fertilizer can be sprayed with dryland 500 times liquid or Huimanfeng 600-800 times liquid to quickly add nutrients; second, soil topdressing, topdressing urea by 5-6 kg per acre, to promote plant growth, Reduce the extent of injury.
5, cultivating loose soil method. Soil cultivating in row, breaking soil compaction, enhancing soil permeability, promoting beneficial microbial activity, accelerating the decomposition of soil nutrients, enhancing the absorption capacity of roots for nutrients and water, enabling plants to restore growth and development as soon as possible, reduce the damage caused by drug damage.
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