In 2018, in the Wuyuan County of Heilongjiang Province, the application of plant protection drones to spray organic bio-pesticide was carried out to prevent and control the rice blast. Two tests were set up without repeating. Treatment 1: Application of plant protection drones to use 20 billion spores/ml of Bacillus subtilis dispersible oil suspension agent 60 ml at the end of the rice booting stage and at the heading stage. Treatment 2: Apply a backpack-type hand sprayer to use 20 ml of spores/ml of Bacillus subtilis dispersible oil suspension agent at the end of the rice and at the heading stage. The specific small series will be explained below. 1 Test materials and methods 1.1 Overview of the test site The test site is located in the rice field of Ding Liguo, a farmer in Sifangshan Village, Wuyuan Town, Wuyuan County, Heilongjiang Province. The test area is 100 mu. The test site is flat and the traffic is convenient. The soil is chernozem, the soil fertility is medium, and the organic matter content is 5.3. %, PH value is 7.4. The test site was turned over on April 20, 2018, and the base fertilizer was applied. The Sinochem 45% potassium sulfate composite fertilizer was applied, and 50 kg was applied per mu. On May 28th and June 10th, 2018, the application of green fertilizer and tiller fertilizer was applied. 46% of the urea was applied at 6Kg and 10Kg respectively. On May 21, 2018, mechanical transplanting was carried out with the specification of 9×4 inches. (29.7×13.2cm), the rice variety is Matsuzaka 16. 1.2 Test design In the same paddy field, plant protection drones and backpack-type manual sprayers are used to prevent and control rice blast, covering an area of ​​50 mu each. 1.3 Test products and equipment The organic bio-pesticide 20 billion spores/ml of Bacillus subtilis dispersible oil suspension agent was selected and supplied by Deqiang Biotech Co., Ltd. The MG-1 DJI UAV is used for spraying. The working box volume is 10L, the spray blessing is 4-6m, 4 nozzles, the working area per drive is 10 mu, and the spray volume per a mu is 1L. The 3WBS-16A knapsack manual sprayer was selected and produced by Hunan Hengyang Jifeng Sprayer Co., Ltd., and the market was purchased. 1.4 Test treatment Treatment 1: Application of plant protection drones to use 20 billion spores/ml of Bacillus subtilis dispersible oil suspension agent 60 ml at the end of the rice booting stage and at the heading stage. Treatment 2: Application of a backpack-type hand sprayer to use 20 billion spores/ml of Bacillus subtilis dispersible oil suspension agent 100 ml at the end of the rice booting stage and the heading stage. 1.5 Application time and method Treatment 1 and treatment 2 The specific application time is: The second administration time is July 23, 2018 (the end of rice panicle); the second medication time is August 8, 2018 (rice heading stage). Treatment 1 was sprayed with a plant protection drone, and treatment 2 was sprayed with a knapsack manual sprayer. 1.6 Prevention and control of other diseases and pests In the treatment 1 and treatment 2 plots, various diseases and pests did not occur in all growth stages of rice, and no other drugs (excluding rice blast prevention agents) were used for prevention. 1.7 Prevention and treatment efficacy investigation Rice leafhoppers and panicles were randomly sampled by 5-point method, and 50 strains were sampled at each point. The incidences of rice leafhoppers, panicles, and cost-effectiveness were recorded. See Appendix 12018, Wuyuan County, Heilongjiang Province for details. Comparative analysis of the effects and comprehensive benefits of different equipment for controlling rice blast. 2 Summary From the survey data sheet 1 analysis: Treatment 1 application of plant protection drone spraying organic bio-pesticide 20 billion spores / ml Bacillus subtilis dispersible oil suspension agent did not cause any phytotoxicity, excellent safety; plants are more robust, leaves Thicker, resistant to lodging. Compared with the treatment of 2 mu, the yield increased by 11.2kg, the yield increased by 8.7%, and the net increase benefit of mu was 41.56 yuan. It has good economic and ecological benefits and is worthy of promotion and application. For the wonderful pictures and hot comments on the application of plant protection drones, you may be interested in the following recommended contents. Welcome to read.
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