Herbal medicine

In summer, the vitality of the weeds seems to be more tenacious. It is like killing the small strong, the nutrients of the crops are absorbed by them, and how the farmer's uncle fights with the weeds. The use of herbicides is very convenient, but an improperly used crop also goes along with weeds, so weeds must be applied to grass!

Herbicides are generally selective, and different herbicide varieties have different effects on crops and weeds. When farmers choose herbicides, they must read the product label or instructions carefully or purchase them under the guidance of agricultural technicians. The herbicide chosen should be safe for the crops used and effective against weeds in crop fields. For example, 2,4-D butyl ester and dimethyl tetrachlorine are safe for wheat, corn and other gramineous crops. They can kill the dicotyledonous weeds such as gray vegetables, leeks, etc. Weeds are invalid.

According to different growth stages of crops and weeds, select suitable herbicides. The herbicide use period can be divided into pre-sowing soil treatment, pre-planting soil treatment before seeding, and post-emergence treatment of stems and leaves. The herbicide should be selected according to the application period.

Both the front and rear crops are selected for proper herbicides. Long-lived herbicides such as chlorsulfuron, metsulfuron, ethametsulfuron, chlorimuron-methyl (tosulfuron-methyl), puproxan, Guangmailing, and atrazine have a long residual effect in soil. Sensitive crops of afterglow produce phytotoxicity. When using such herbicides, it is necessary to take into account the crops under the crop. For example, in a soybean field using chlorimuron-ethyl, it is not appropriate to plant sensitive crops such as field vegetables, rapeseed, rice, potatoes, melons, and vegetables, and to plant wheat, soybeans, and corn.