Depending on the soil, herbicides containing different herbicides containing chlorsulfuron-methyl components are mainly degraded in the soil by hydrolysis. When Daejeon encounters alkaline soil, low rainfall in the year, and soil drought, their residual period in the soil tends to be prolonged, and crops are susceptible to flooding. On the other hand, when acid soils, soils are wet or irrigation farmland, the residual period is shortened. After the crop is relatively safe.
To fully understand and avoid causing phytotoxicity, such as herbicides containing chlorsulfuron-methyl and metsulfuron-methyl, such as wheat straw, wheat straw, etc. Putian. In recent years, after using tribenuron-methyl in some localities, it has produced different degrees of phytotoxicity on the peanuts in the lower jaw, causing difficulties in the emergence of peanuts, slow growth, and reduced yield.
Improve methods to reduce drug residues First, the amount of drugs to be accurate, spraying should be uniform, no leakage, no heavy spray. If herbicides containing chlorsulfuron-methyl components are applied year after year, they will not only cause phytotoxicity to crops but also have phytotoxicity to crops of the current season. The second is that the use period should be flexible. It can be applied before the crop is sown, before the seedlings, or after the seedlings. At present, Pust, Guangmiaoling and Atrazine should use early post-emergence spraying to achieve the purpose of reducing the dosage and reducing the residue. The third is rational application of pesticides. The combination of chlorsulfuron and 2,4-D butyl ester can reduce the dosage of chlorsulfuron by 50%. Pussite soil treatment can be mixed with trifluralin, acetochlor, alachlor, saxin and Others. Stripe spraying with Pusit and Guangmianling can reduce the dosage by more than 30%.
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