According to the survey, the main pests and diseases in the current wheat fields include alfalfa, wheat stubble, planthoppers, swedish flies, etc. Some of these pests directly harm wheat, causing lack of seedlings and ridges, some will spread viral diseases, and some use wheat fields as wintering and The base for breeding insect sources in the coming year should be promptly investigated and treated.
1. Hey. The whole plant of the wheat seedlings damaged by cockroaches died dry, standing upright or lodging. Some of the wheat seedlings showed that the heart leaves were yellow and the affected seedlings were pulled out, and the roots were all numb-like (see figure). According to the results of black light larvae, the amount of locusts this year is more than 20% higher than in previous years. A few wheat fields that were planted at the end of September, the wheat damage rate is as high as 15%. The cockroach can be trapped and killed by the bait. The wheat bran can be used as a bait. First, the wheat bran is sautéed, then 30 times 90% trichlorfon solution is added and stirred evenly to make a poison bait. It can also be used to kill and kill the millet, boil the millet into a semi-ripe, remove the sun and dry it, then use 100 times liquid phoxim or dimethoate to prepare the poisonous valley, and sprinkle it in the wheat field in the evening.
2. Wheat aphids and gray planthoppers. In addition to harming wheat, these pests also transmit wheat yellow dwarf disease and bushy dwarf disease. In recent years, these two viral diseases have become increasingly serious. After the emergence of wheat, these pests migrated from the surrounding weeds into the wheat fields. According to the investigation, the wheat yellow dwarf disease and the clump dwarf disease were all manifested in the head or side, and the incidence was light near the wheat field. Here, the poisonous insects (wheat and gray planthoppers) first flew to the field to harm the wheat, and gradually spread to the inside to carry out the harm. Therefore, spraying insecticides on such pests after wheat seedlings can be sprayed with 30% acephate 1000 times solution, 2.5% Kungfu kid 1000 times, 4.5% beta-cypermethrin EC 2000 times, sprayed around the wheat field and Similar grassland to prevent virus-borne insects from transmitting viral diseases.
3. Swedish flies. In addition to harming wheat and oats, the worm also harms crops such as corn, millet and sorghum, and gradually rises to the main pests in the winter wheat area from the original secondary pests. After sowing and emergence of winter wheat, the worm lays eggs on the stems and leaves of wheat, and after hatching, it harms the heart of the wheat. Generally, the earlier the wheat field is planted, the more severe the damage is, and the winter is over the wheat field. In the following year, the emergence of phlegm and phlegm was transferred to summer corn and millet for damage. In the period from August to September this year, squid attractants were set up in the field, and adult worms were induced. The wheat heart rate was found to be as high as 10% or more on the wheat sown in mid-September. Therefore, early planting of wheat fields should be promptly investigated and controlled to reduce the amount of overwintering insects. The pest can also be sprayed with multiple kinds of acephate, cypermethrin, etc., and the plot with serious heart seedling needs to be controlled by the whole field.
Author: Dong Zhiping Li Dong Gan Yao into
Source: Hebei Science and Technology News
1. Hey. The whole plant of the wheat seedlings damaged by cockroaches died dry, standing upright or lodging. Some of the wheat seedlings showed that the heart leaves were yellow and the affected seedlings were pulled out, and the roots were all numb-like (see figure). According to the results of black light larvae, the amount of locusts this year is more than 20% higher than in previous years. A few wheat fields that were planted at the end of September, the wheat damage rate is as high as 15%. The cockroach can be trapped and killed by the bait. The wheat bran can be used as a bait. First, the wheat bran is sautéed, then 30 times 90% trichlorfon solution is added and stirred evenly to make a poison bait. It can also be used to kill and kill the millet, boil the millet into a semi-ripe, remove the sun and dry it, then use 100 times liquid phoxim or dimethoate to prepare the poisonous valley, and sprinkle it in the wheat field in the evening.
2. Wheat aphids and gray planthoppers. In addition to harming wheat, these pests also transmit wheat yellow dwarf disease and bushy dwarf disease. In recent years, these two viral diseases have become increasingly serious. After the emergence of wheat, these pests migrated from the surrounding weeds into the wheat fields. According to the investigation, the wheat yellow dwarf disease and the clump dwarf disease were all manifested in the head or side, and the incidence was light near the wheat field. Here, the poisonous insects (wheat and gray planthoppers) first flew to the field to harm the wheat, and gradually spread to the inside to carry out the harm. Therefore, spraying insecticides on such pests after wheat seedlings can be sprayed with 30% acephate 1000 times solution, 2.5% Kungfu kid 1000 times, 4.5% beta-cypermethrin EC 2000 times, sprayed around the wheat field and Similar grassland to prevent virus-borne insects from transmitting viral diseases.
3. Swedish flies. In addition to harming wheat and oats, the worm also harms crops such as corn, millet and sorghum, and gradually rises to the main pests in the winter wheat area from the original secondary pests. After sowing and emergence of winter wheat, the worm lays eggs on the stems and leaves of wheat, and after hatching, it harms the heart of the wheat. Generally, the earlier the wheat field is planted, the more severe the damage is, and the winter is over the wheat field. In the following year, the emergence of phlegm and phlegm was transferred to summer corn and millet for damage. In the period from August to September this year, squid attractants were set up in the field, and adult worms were induced. The wheat heart rate was found to be as high as 10% or more on the wheat sown in mid-September. Therefore, early planting of wheat fields should be promptly investigated and controlled to reduce the amount of overwintering insects. The pest can also be sprayed with multiple kinds of acephate, cypermethrin, etc., and the plot with serious heart seedling needs to be controlled by the whole field.
Author: Dong Zhiping Li Dong Gan Yao into
Source: Hebei Science and Technology News
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