The prevention and control of crop diseases and insect pests during the rainy season is a problem often encountered by farmers in production. Warm and rainy weather is conducive to the reproduction and growth of various pests. Therefore, it is necessary to adopt appropriate application methods to improve the control effect of pests and diseases.
First, the use of strong systemic pesticides.
Such as carbofuran, phorate, insecticidal double, omethoate, monocrotophos, dimethoate, acephate, Bataan, 1059 and other insecticides and thiophanate, carbendazim, gram sputum, rice blast The net fungicides, both of which have a systemic action, in the 4-5 hours after application, more than 80% of the active ingredients are absorbed into the tissues by the crops, even if it rains, it can kill pests and germs. .
Second, the selection of quick-acting pesticides such as: dichlorvos, phoxim, fast-killing insects, phosphorus amines, killing pine, 1605, enemy killing, rifampicin, trichlorfon, carbaryl, quick-killing and killing. These pesticides have a strong contact and stomach toxicity, and the knockdown speed is fast. If the application method is proper, the insecticidal action will occur about 5-10 minutes after the application. These pesticides have the characteristics of short acting time, strong poisoning, scavenging and killing, and rapid insecticide.
Third, add adhesives and supplements to pesticides.
Adhesives are also called spreading agents and humectants. Adhesives can increase the adhesion of pesticides on crops and insects, reduce the loss of wind and rain on the chemicals, increase the residual effect of pesticides, and improve the control effect. Such as: pulp waste liquid, saponin, soy flour, washing powder, pull-open powder, etc., poly-ethanol, cheese, leather, soap, etc. as a sticking agent effect is also very good. For example, washing powder and the like are added to the liquid medicine, and it is difficult to wash the liquid medicine when it encounters small or moderate rain after application. The practice is: add 50-100 grams of washing powder per acre of liquid medicine, mix and spray, not suitable for a long time.
Fourth, the use of rain-tolerant agents.
Such as Jinggangmycin, the rain is 4 hours after application, the efficacy is basically unaffected.
Fifth, improve the application method.
That is to say, according to the law of pest activity. For some nocturnal pests, it is necessary to apply the medicine in the afternoon or evening. Paddy fields can be applied in shallow water, such as rice leaf roller, which is a nocturnal pest. Applying in the evening, the drug quickly penetrates into the plant to achieve the purpose of insecticide. Generally, pests can die after 2-3 hours.
Sixth, grasp the rain gap application.
For example, if powder pesticides are applied, it should be controlled in large areas in a short period of time. The application of the powder can appropriately increase the number of administrations and the amount of administration.
First, the use of strong systemic pesticides.
Such as carbofuran, phorate, insecticidal double, omethoate, monocrotophos, dimethoate, acephate, Bataan, 1059 and other insecticides and thiophanate, carbendazim, gram sputum, rice blast The net fungicides, both of which have a systemic action, in the 4-5 hours after application, more than 80% of the active ingredients are absorbed into the tissues by the crops, even if it rains, it can kill pests and germs. .
Second, the selection of quick-acting pesticides such as: dichlorvos, phoxim, fast-killing insects, phosphorus amines, killing pine, 1605, enemy killing, rifampicin, trichlorfon, carbaryl, quick-killing and killing. These pesticides have a strong contact and stomach toxicity, and the knockdown speed is fast. If the application method is proper, the insecticidal action will occur about 5-10 minutes after the application. These pesticides have the characteristics of short acting time, strong poisoning, scavenging and killing, and rapid insecticide.
Third, add adhesives and supplements to pesticides.
Adhesives are also called spreading agents and humectants. Adhesives can increase the adhesion of pesticides on crops and insects, reduce the loss of wind and rain on the chemicals, increase the residual effect of pesticides, and improve the control effect. Such as: pulp waste liquid, saponin, soy flour, washing powder, pull-open powder, etc., poly-ethanol, cheese, leather, soap, etc. as a sticking agent effect is also very good. For example, washing powder and the like are added to the liquid medicine, and it is difficult to wash the liquid medicine when it encounters small or moderate rain after application. The practice is: add 50-100 grams of washing powder per acre of liquid medicine, mix and spray, not suitable for a long time.
Fourth, the use of rain-tolerant agents.
Such as Jinggangmycin, the rain is 4 hours after application, the efficacy is basically unaffected.
Fifth, improve the application method.
That is to say, according to the law of pest activity. For some nocturnal pests, it is necessary to apply the medicine in the afternoon or evening. Paddy fields can be applied in shallow water, such as rice leaf roller, which is a nocturnal pest. Applying in the evening, the drug quickly penetrates into the plant to achieve the purpose of insecticide. Generally, pests can die after 2-3 hours.
Sixth, grasp the rain gap application.
For example, if powder pesticides are applied, it should be controlled in large areas in a short period of time. The application of the powder can appropriately increase the number of administrations and the amount of administration.
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