| 上海郊区农田杂草危害调查及其防除策略 |
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| 引用本文： | 唐洪元,王学鹗.上海郊区农田杂草危害调查及其防除策略[J].植物保护学报,1986,13(3):211-216. |
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| 作者姓名： | 唐洪元 王学鹗 |
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| 作者单位： | 上海市农科院植保所，上海市农科院植保所 |
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| 摘 要： | 根据农田杂草的相对覆盖度、高度、多度制订了5级目测草害调查方法,三年中调查了不同类型田5500块,调查结果表明,稗、异型莎草在稻田出现频率达100％和93％,危害面积达35.2％和23.2％;看麦娘、牛繁缕、春蓼在麦田出现频率为74.0％、86.0％、56.5％,危害面积达29.16％、32.84％、18.72％;千金子、马唐在棉田出现频率为99.6％、94.0％,危害面积达58.8％、36.4％;危害的种类、程度因土壤pH、轮作制度、土质、防除水平不同而异。在防除工作中要抓住主要作物和重点草害,注重农业防除,协调必要的化学除草。
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A SURVEY OF MAIN WEED DAMAGE IN SHANGHAI SUBURB, WITH SUGGESTIONS FOR CONTROL |
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| Tang Hongyuan and Wang Xuee.A SURVEY OF MAIN WEED DAMAGE IN SHANGHAI SUBURB, WITH SUGGESTIONS FOR CONTROL[J].Acta Phytophylacica Sinica,1986,13(3):211-216. |
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| Authors: | Tang Hongyuan and Wang Xuee |
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| Institution: | Plant Protection Institute, Shanghai Academy of Agriculture and Plant Protection Institute, Shanghai Academy of Agriculture |
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| Abstract: | Weed damage was estimated by vision according to the relative coverage, height, and number of weeds,and classified into 5 grades as follows:(1) a few weeds present, but no damage to crop; (2) light damage;(3) medium damage; (4) serious damage; (5) very serious damage.5500 fields, including rice, wheat, cotton and truck crops were assessed. The weed flora frequencies and amounts of different species of weeds of different types of fields have been analysed.The results were different in different area and fields, depending on the soil pH, crop rotation, tillage practices and the level of chemical control.It is concluded that weeds should be controlled on the basis of cultural measures, integrated with applications of herbicides. |
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