The use of herbicides is familiar to everyone. Some herbicides are highly medicinal. If they are accidentally sprayed too much, causing herbicide damage, how should we avoid the emergence of herbicides in daily growth?
The effect of herbicides is closely related to the environment. Generally speaking, the organic matter content in the soil is relatively stable, but the humidity, light, precipitation, and soil moisture vary greatly from year to year. Therefore, environmental factors are important for weeding. The effects of medicinal remedies are very complicated. When using herbicides, various factors must be integrated to prevent the occurrence of phytotoxicity, reduce the damage caused by phytotoxicity, and enable farmers' friends to obtain a bumper harvest.
Therefore, in the process of using herbicides, we must pay great attention to the use of herbicides and contraindications to avoid the occurrence of phytotoxicity.
When you use or purchase, you can find out the name and avoid misuse of the herbicides. There are many types of manufacturers that are often produced by one manufacturer. There are also many product names. It is easy to mistype the name and cause misuse. In the usual purchase, it must be clearly defined whether it is suitable for use in dry fields or a herbicide suitable for rice fields. If a dry field herbicide such as alachlor is used as a butachlor, the word difference may cause irreparable damage to rice. Therefore, the selection of herbicides should not only recognize the name of the pesticide, but also distinguish the three certificates. It is also necessary to pay attention to the outer packaging, similar to the name of the fake and inferior pesticides , misleading consumers to use, causing phytotoxicity.
The method of use and the amount of drug used must be mastered. The amount of herbicide used is too large. The application period and improper use method are often the main causes of phytotoxicity. It is unreasonable for the herbicide to be used too much if it is not used according to the instructions. For example, the herbicide butachlor in the paddy field is spread after the insertion, and the soil is more than 150ml per mu. The seedling is weak, not green, and the water layer is encountered. When it is too deep, it can inhibit rice growth and tillering, and even dead seedlings. For the rice field weeding, it is necessary to strictly control the dosage and application conditions. The temperature must exceed 28 degrees and the dosage should be appropriately reduced. Ultra-high-efficiency herbicides such as bensulfuron-methyl and pyrazosulfuron-methyl have high herbicidal activity and are easy to produce phytotoxicity. Butachlor is safer to apply toxic soil after rice is greened. However, if it is combined with land preparation before insertion, it will inhibit rice growth, delay tillering, encounter low temperature, abnormal high temperature or too deep water layer, and the disease will be more serious or even die. seedling. For herbicide concentrations in stem and leaf sprays that are too large, repeated sprays can also cause local phytotoxicity.
Herbicides with long residual periods should be used with caution.
If you choose to degrade the residual herbicide in the soil, you should be cautious when planting the structure adjustment and replanting the crop. First, find out what is the top seed, what herbicide is used, and how long the residual effect period should be. , the safety of the crops after the crop. Try not to use long-lasting herbicides.
Pesticide manufacturer http://
Silicon Powder,Silicon Carbide Grit ,Silicon Carbide Powder ,Silica Gel Powder
Non-ferrous Metal & Products Co., Ltd. , http://www.nbferrosilicon.com