The use of greenhouses and greenhouses to cultivate fruit trees, due to tight closure and high humidity, the use of conventional spray methods to control pests and diseases, easy to pollute the environment, and phytotoxicity. Practice has proved that the following application methods are applied to the facility fruit trees to help overcome the above shortcomings and improve the control effect by 30%.
I. Rooting method The pesticide is directly applied to the soil, so that the fruit trees are absorbed through the root system and transmitted to various organs, thereby achieving the purpose of controlling pests and diseases. Aihu Teaching Practice Base of Agricultural Broadcasting School, Shanting District, Zaozhuang City, Shandong Province, using the solar greenhouse Huaguang nectar as the test material, digging the trench 50 cm from the trunk under the tree, pouring 10 kg of each plant into 10% Dagongchen wettability The powder 3000 times liquid is used to control the aphids, and the ditch is filled with soil after the drug solution is infiltrated. Ten days after the application of the drug, the reduction rate of the treeworm population of Shida Gongchen was 93.2%. This method can reduce environmental pollution, ensure the safety of operators, and is conducive to the protection and utilization of natural enemies of pests in the shed.
Second, the smoke application method The special aerosol is ignited in the shed, using the smoke that is diffused in the air to prevent pests and diseases. In the greenhouse, the aerosol chlorothalonil is used to control leaf diseases such as bacterial perforation, and the effect can reach more than 86%. The use of smoke application method does not require medical equipment, saves time and effort, and is convenient and uniform, so that the medicine mist can diffuse the entire greenhouse space, and has a good killing effect on germs and pests hidden in different parts.
Third, dust application method Dust application is an important technology in the development of protected cultivation. Dust pesticides are very fine pesticide powders that have been specially processed. After spraying, they can form suspended fly ash in the shed, which will produce a number of deposits, which will facilitate the attachment to plants and reduce the humidity in the shed. The disease effect is good, such as 5% chlorothalonil dust to control the disease of the peach leaf in the solar greenhouse, the control effect can reach more than 95%. The following three points should be noted when applying dust:
1. Dust should be kept dry and reduced in moist conditions.
2. The application time is usually carried out in the morning or evening, avoiding the application at noon. Under light conditions, the temperature difference between the plant and the air is large, which affects the adhesion of dust, thereby reducing the control effect.
3. The application time should be in the early stage of the disease. According to the disease condition and environmental conditions, the drug should be applied every 7 days or so. The entire shed should be applied at least 2 to 3 times.
Excerpt from: 2005.22.22.2 "Yunnan Science and Technology News"
I. Rooting method The pesticide is directly applied to the soil, so that the fruit trees are absorbed through the root system and transmitted to various organs, thereby achieving the purpose of controlling pests and diseases. Aihu Teaching Practice Base of Agricultural Broadcasting School, Shanting District, Zaozhuang City, Shandong Province, using the solar greenhouse Huaguang nectar as the test material, digging the trench 50 cm from the trunk under the tree, pouring 10 kg of each plant into 10% Dagongchen wettability The powder 3000 times liquid is used to control the aphids, and the ditch is filled with soil after the drug solution is infiltrated. Ten days after the application of the drug, the reduction rate of the treeworm population of Shida Gongchen was 93.2%. This method can reduce environmental pollution, ensure the safety of operators, and is conducive to the protection and utilization of natural enemies of pests in the shed.
Second, the smoke application method The special aerosol is ignited in the shed, using the smoke that is diffused in the air to prevent pests and diseases. In the greenhouse, the aerosol chlorothalonil is used to control leaf diseases such as bacterial perforation, and the effect can reach more than 86%. The use of smoke application method does not require medical equipment, saves time and effort, and is convenient and uniform, so that the medicine mist can diffuse the entire greenhouse space, and has a good killing effect on germs and pests hidden in different parts.
Third, dust application method Dust application is an important technology in the development of protected cultivation. Dust pesticides are very fine pesticide powders that have been specially processed. After spraying, they can form suspended fly ash in the shed, which will produce a number of deposits, which will facilitate the attachment to plants and reduce the humidity in the shed. The disease effect is good, such as 5% chlorothalonil dust to control the disease of the peach leaf in the solar greenhouse, the control effect can reach more than 95%. The following three points should be noted when applying dust:
1. Dust should be kept dry and reduced in moist conditions.
2. The application time is usually carried out in the morning or evening, avoiding the application at noon. Under light conditions, the temperature difference between the plant and the air is large, which affects the adhesion of dust, thereby reducing the control effect.
3. The application time should be in the early stage of the disease. According to the disease condition and environmental conditions, the drug should be applied every 7 days or so. The entire shed should be applied at least 2 to 3 times.
Excerpt from: 2005.22.22.2 "Yunnan Science and Technology News"
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