Wheat resistant locust control method

First, choose a suitable insecticide to control wheat aphid many agents, such as imidacloprid, acetamiprid, Diaobi fog, cypermethrin, beta cypermethrin, omethoate, dichlorvos, phoxim, malathion, and Their complex formulations. Promote the use of highly effective, low-toxic, systemic agents. In production, the most important choice of pesticides is the selection of qualified pesticides. Currently, there are some products on the market, and the effective ingredients are insufficient. If farmers are greedy for cheap, the effect of using drugs will certainly not be ideal.

Second, attention to wheat before flowering control of wheat aphids began to occur from the turning green, until the wheat heading Yanghua, always in a slow growth period; after the wheat flowering, the amount of increase sharply. If it can be carefully controlled once before flowering, the population of aphids is difficult to recover in a short period of time, and it is basically possible to control the aphid damage in the whole growth period. At the same time, it can also treat wheat midge. During this period, wheat has not yet grown to a normal plant height and it is relatively easy to control and control.

Third, increase the amount of water Water is the carrier of pharmaceuticals, through the appropriate amount of water can be sprayed to the various parts of field wheat. The lack of water will leave space for the locust to survive. In the later period of wheat growth, due to the high temperature, it is very suitable for the growth and reproduction of locusts, and it can be completed in 5 to 7 days. If there is a shortage of water, the number of residues can be imagined. Difficulty. The thickness of the leaf layer during the grain filling period increases the amount of water during the prevention and treatment.

IV. Use of Compound Formulations during Wheat Filling Period Under normal circumstances, the prevention and control of wheat aphids before flowering can basically ensure that wheat is not harmed. If for some reason there is a large amount of aphids in the grain-filling stage of wheat, some compound preparations can be used. Plants have reached a normal plant height during grain filling, and are usually not easily penetrated. Dichlorvos (about 50 ml per acre) can be used in combination with other insecticides to exert the fumigation effect of dichlorvos, which can be used for better prevention and control. effect. Alternative use of other pesticides can also improve the control effect.

Fifth, the use of different methods of prevention and control In the late growth period of wheat, a common problem in the control of aphids is that after treatment, the upper part of the aphid retreats, while the lower part of the aphid is difficult to die, and a few days later the aphid is also harmed in the upper part. In this case, in addition to the use of a compound formulation, fumigation can also be used to prevent and control the aphids in the lower part of the wheat plant. You can use 40% Dimethoate EC 50 ~ 75 ml, or 80% dichlorvos 75 ~ 100 ml, diluted with 2 ~ 3 kg of water, mix 15 ~ 25 kg of fine sand, in the evening when no wind was thrown into the field.

Six, to reduce the number of medications to give full play to the control of natural enemies, the prevention and control of wheat aphids to understand the occurrence of wheat aphids law to understand the pesticide's insecticidal properties; at the right time, select the right pesticides, and use the right methods for prevention and treatment. Try to use low-toxicity and high-efficiency pesticides to reduce the number of medications, protect various natural enemies of wheat fields, and give full play to the role of natural enemies in controlling aphids.