There are many kinds of weeds in paddy fields, and the damage period is long and it is difficult to control them. The following describes the use of some major herbicides before and after transplanting. 1. Weed control methods before weeding In general, the paddy field should be leveled three days before transplanting, and use 12% eriocaprofen EC 0.08-0.1 kg per acre, or 5% oxalophane EC 0.15-0.2 kg per acre. 15 kilograms of fine clay soil can be used for pouring and 15 kilograms of water can be poured. In addition, 50% piperazine can also be used, the amount of 0.15 kilograms per acre, 2 to 3 days before transplanting with reference to use method of evil weeding. Estrazuron and piperazine can control alfalfa grass, sugarcane grass, eye dishes, etc., control efficiency of more than 90%. The use of misophonin and dalamine can increase the herbicide spectrum, increase the efficacy, and reduce costs. Can be transplanted 2 to 3 days before planting, per acre with 12% oxadiazon 0.1 kg plus 60% chloramine 0.1 kg, made poisonous soil application or pouring water, can receive a drug to completely control the weeds effect. Second, weeding after transplanting weed control methods after transplanting 5 to 7 days, can also be used 12% cacao spirit 0.1 kg plus 60% to oxalate 0.1 kg, or 25% caoxadia 0.05 kg plus 60% to chloramine 0.1 Kilograms, made of poisonous soil or pouring water. For transplanted grass crops dominated by the barn, 96% per mu can be used to build a large 0.2 kg, in the weeds 2 to 3 leaf age application. If the grass is dominated by cane grass, 25% Bendazon 0.25 kg per mu can be used, or 30% dimethyltetrachlorophosphate 0.05 kg plus 25% Benzonsone 0.15 kg. It can be used in the tillering period of rice and has better control effect. . Note: Ecacaazide and piperazine are all soil treatment agents. It is best to perform soil sealing treatment before rice transplanting. When using herbicides, care must be taken to prevent the occurrence of phytotoxicity. If the method is used after transplanting, if the method is not suitable or the dose is large, phytotoxicity will occur. Therefore, the use period and the dose should be strictly controlled.
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