Once herbicide poisoning occurs, the types of phytotoxicity should be identified firstly, the causes of phytotoxicity should be analyzed, the severity of phytotoxicity should be estimated, and appropriate countermeasures should be taken. If the crops are lightly harmed, only the leaves produce temporary, contact-type phytophagous spots. Generally, no measures need to be taken. The crops can quickly return to normal growth. If the crops are seriously damaged by phytotoxicity, the leaves appear chlorosis and shrinkage. , deformity, growth is significantly inhibited, it is necessary to take remedial measures; for severe phytotoxicity, growth is severely inhibited or the growth point of death and even some plant deaths, estimated output loss of more than 60% or even out of the land, should consider to fill Species, make up or destroy. Do not blindly apply remediation agents during replanting. Use the appropriate pharmaceutical agents under the guidance of the technical department to detoxify and compensate for growth. The crops with strong tolerance to herbicides and suitable growth period should be replanted to avoid the occurrence of the second phytotoxicity.
For the land with lighter damage, the following measures can be taken to remedy:
Herbicide antidote. Can reduce or offset the herbicide poisoning. For example, naphthalene anhydride, R-28725 is a selective seed dressing protection agent that can be absorbed by the seeds and inhibit the herbicide damage to crops in the roots and leaves. Such drugs can protect corn from acetochlor, butachlor, etc. Herbicide damage.
Spray water wash. When the amount of herbicide is too large, measures shall be taken to remove the poison as soon as possible when the pesticide is produced or will occur. When the rice field appears phytotoxicity, the poisonous field water shall be drained immediately, and the fresh water rinsed 3 to 4 times continuously. Can also be combined with irrigation, drainage in the field applied lime powder (20 ~ 30kg / acre) to neutralize acid herbicide, and continuous irrigation with water. In which soil treatment agent harms, the principle does not use flood irrigation; stem and leaf treatment agent injury, can be properly irrigated. If the phytotoxicity occurs due to the spraying of certain herbicides on the foliage and plants, spray the phytotoxic crop leaves quickly with plenty of clean water and spray fresh water 2 or 3 times as much as possible so that the drugs on the surface of the plants are brushed off. And increase the application of phosphorus and potassium fertilizers, cultivating loose soil, promote root development, in order to enhance crop recovery.
If the injury occurs locally, rinse it with water or deep plowing, then make up the seedlings and increase the amount of available nitrogen fertilizer.
The damaged plots can be exposed to sunlight for 3 to 5 days, followed by deep ploughing after rinsing with water or heavy rain, and sowing other crops after 15 to 20 days.
Apply quick-acting, high-quality foliar fertilizers or plant growth regulators. In crops where phytotoxicity occurs, urea or foliar fertilizers can be quickly applied to increase nutrients, promote crop growth and enhance their ability to recover; spraying plant growth regulators, gibberellins, alkaloids, and fungicides. Nitrophenol sodium, love more income.
Use safe protectors rationally. Activated carbon, etc. have a good degradation effect on herbicides such as Simazine. Such as: use of activated carbon and other seeds of corn, can reduce or prevent acetochlor, 2,4-D butyl ester, Li Gulong herbicides such as corn injury. When sowing, the surface of the soil is sprinkled with 10kg/mu of activated carbon powder, or activated carbon powder is used locally on the crop to prevent Simazine from producing phytotoxicity on cucumbers, wheat, and soybeans.
Remove the more serious parts of the injury. This kind of measure is commonly used in fruit trees. Branches that are heavily damaged should be quickly removed to prevent the chemicals from continuing to conduct and permeate downwards, and they should be quickly watered to prevent further injury.
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