| 晋中地区玉米田杂草化学防除技术研究 |
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| 引用本文： | 王宏富,郭平毅.晋中地区玉米田杂草化学防除技术研究[J].山西农业大学学报(自然科学版),1997,17(3):240-244. |
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| 作者姓名： | 王宏富 郭平毅 |
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| 基金项目： | 山西省归国留学人员项目 |
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| 摘 要： | 本试验于１９９４—１９９６年，采用随机区组设计方法，对莠去津、禾耐斯、乙草胺、拉索、巨星和２．４—Ｄ丁酯单用及混用于春、夏玉米田进行了研究。结果表明：１．播后苗前土壤处理，春玉米田单用乙草胺２００—３００ｍｌ／亩，或禾耐斯７５—１００ｍｌ／亩，或莠去津２００—３００ｍｌ／亩；夏玉米田单用莠去津１５０—２００ｍｌ／亩，或拉索３００ｍｌ／亩对禾草株防效达９０．４％以上，对阔叶草株防效达８０．７以上。春玉米田乙草胺１００—２００ｍｌ／亩十巨星１ｇ／亩，或禾耐斯５０—７５ｍｌ十莠去津１００—１５０ｍｌ／亩，夏玉米田２．４—Ｄ７５—１００ｍｌ分别与莠去津１００—１５０ｍｌ／亩、拉索３００ｍｌ／亩、或禾耐斯６０ｍｌ／亩混用对禾草防效达９５．３％以上，对阔叶草防效达９０．２％以上，且扩大杀草谱。２．苗后茎叶处理，春玉米田单用巨星１ｇ／亩、或２．４—Ｄ５０—７５ｍｌ／亩对禾草防效差，对阔叶草鲜重防效达８５．７％以上，单用莠去津２００—２５０ｍｌ／亩对禾草防效达９４．２％以上，对阔叶草防效达８０．１％以上；夏玉米田单用莠去津１５０—２００ｍｌ／亩，杂草防效达７９．４—８４．８％，莠去津１００—２００ｍｌ＋２．４－Ｄ５０－７５?
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| 关 键 词： | 莠去津 禾耐斯 乙草胺 拉索 玉米 杂草 化学防除 |
A Study on Techniques of Chemical Weed control for Maize Fields in JINZHONG Area |
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| Abstract: | From 1994 to 1996, Atrazine, Harness, Acetochlor, Lasso, Express, 2,4-D and their mixtures were applied to spring-sown and summer-sown maize. The results showed that: (i) with applications pre-seedling and post-sowing, ( weeds control effects for grass weeds and broadleaf weeds were over 90.4% and over 80.7% respectively if 200￣300ml/mu of Acetochlor, 75￣100ml/mu of Harness or 200￣300ml/mu of Atrazine was sprayed in spring-sown maize fields, and 150￣200ml/mu of Atrazine or 300ml/mu of Lasso was used in summer-sown maize fields; ( mixtures of 100￣200ml/mu Acetochlor and 1g/mu Express, or 50￣75ml/mu Harness and 100￣150ml/mu Atrazine in spring-sown fields, and 75￣100ml/mu 2,4-D with 100￣150ml/mu Atrazine, 300ml/mu Lasso, or 60ml/mu Harness in summer sown fields proved over 95.3% control effects for grass weeds and more than 90.2% for broadleaf weeds, being stronger control power and wider control scope than single application of these herbicides. (ii) with post-seedling application, ( weeds control effects in fresh weight were over 85.7% for broadleaf weeds, and poorer for grass weeds if 1g/mu Express, or 50￣75ml/mu 2,4-D were sprayed in spring maize fields, and 80.1￣90.6% for broadleaf weeds and 87.0￣94.2% for grass weeds when applying 200￣250ml/mu Atrazine; ( in sumer maize fields 150￣200ml/mu Atrazine had a control effect of 79.4￣84.8%, and a mix of 100￣200ml/mu and 50￣75ml/mu 2,4-D 85.0￣94.5%. (iii) Atrazine seemed to have higher control power when used pre-seedling. All application rate recommended above were safe to maize crop. |
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| Keywords: | Atrazine Harness Acetochlor Lasso Weeds maize field |
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