| 棉花不同生育期棉盲蝽的为害损失及防治指标的研究 |
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| 引用本文： | 张永孝,曹雁萍,柏立新,曹赤阳.棉花不同生育期棉盲蝽的为害损失及防治指标的研究[J].植物保护学报,1986,13(2):73-78. |
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| 作者姓名： | 张永孝 曹雁萍 柏立新 曹赤阳 |
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| 作者单位： | 江苏省农科院植保所，江苏省农科院植保所，江苏省农科院植保所，江苏省农科院植保所 |
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| 摘 要： | 本项研究以绿盲蝽(Lygus Lucorum Mey Dur)及中黑盲蝽(Adelphocoris Suturalis Jak.)为对象。棉花从子叶、真叶、现蕾到结铃各个阶段都能遭受棉盲蝽的为害。由于盲蝽成、若虫以刺吸口器刺伤幼嫩器官和生长点,使部份器官受到直接损伤并影响到棉株正常生长,导致减产。两种盲蝽不同种群数量在真叶期和蕾铃期为害造成籽花产量的损失均呈抛物型曲线。绿盲蝽在真叶期和蕾期为害,其经济阈限按防治费用与产量损失金额相等时,分别为百株有虫4.7头和12.57头,中黑盲蝽在蕾期的经济阈限为百株10.77头。据此,提出在真叶期及蕾期的防治指标依次为百株5头及10～12头。
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PLANT BUG DAMAGE ON COTTON IN DIFFERENT GROWING STAGES AND THE THRESHOLD FOR CONTROL |
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| Zhang Yongxiao,Cao Yanping,Bai Lixin and Cao Chiyang.PLANT BUG DAMAGE ON COTTON IN DIFFERENT GROWING STAGES AND THE THRESHOLD FOR CONTROL[J].Acta Phytophylacica Sinica,1986,13(2):73-78. |
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| Authors: | Zhang Yongxiao Cao Yanping Bai Lixin and Cao Chiyang |
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| Institution: | Jiangsu Academy of Agricultural Sciences Plant Protection Institute,Jiangsu Academy of Agricultural Sciences Plant Protection Institute,Jiangsu Academy of Agricultural Sciences Plant Protection Institute and Jiangsu Academy of Agricultural Sciences Plant Protection Institute |
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| Abstract: | The plant bugs, Lygus lucorum Mey-Dur and Adelphocoris suturalis Jak.have become important pests of cotton in Yangtze River valley since 1970''s. These two species, occurring in various cotton growing stages simultaneously, infest the seedling leaves, squares and young bolls. Seedlings and young bolls are most seriously damaged, which may be killed or shed during young stages. Though no damage is caused when the population density is sufficiently low, it will increase steadily when the number of adults per 100 plants exceed 4. A regression analysis shows that when 5 bugs per 100 plants in 5-6 leavs stages and 10-12 bugs per 100 plants in squaring stage a spray of monocrotophos may be required. |
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