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首页> 外文期刊>The Kasetsart Journal >Response of Weeds and Wheat Yield to Tillage and Weed Management
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Response of Weeds and Wheat Yield to Tillage and Weed Management

机译：杂草和小麦产量对耕作和杂草处理的响应

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摘要

Weed flora and yield attributes of wheat in two tillage systems (conventional and minimum tillage) with five weed management systems (unweeded control, handweeding one, post emergence application of sulfosulfuron @ 28 g ai/ha, post emergence application of fenoxaprop-P-ethyl @ 100g ai/ha, and rice straw mulch @ 4 t/ha + sulfosulfuron @ 26 g ai/ha) were evaluated in Khumaltar, Nepal from 2001-02 to 2002-03 winter season. The most common narrowleaf weed species were Alopecuros aequalis and Phalaris minor and broadleaf dicot were Chenopodium album, Coronopus didymus, Rumex crispus, Stellaria media, and Saliva anthemifolia. The population of A. aequalis, P. minor, R. crispus, and S. media was more in conventional tillage at 4 weeks after sowing compared to minimum tillage. The total population of narrowleaf weeds was higher in conventional tillage than in minimum tillage at 4 and 8 weeks after sowing. Sulfosulfuron gave broader spectrum of weed control than fenoxaprop-P-ethyl. Sulfosulfuron has suppressed both narrowleaf and broadleaf weeds. Fenoxyprop-P-ethyl suppressed only narrowleaf weeds, but broadleaf weeds like C. album, C. didymus, R. crispus, S. anthemifolia, and S. media were not suppressed. Among the weed management treatments, sulfosulfuron, handweeding one, and straw mulch + sulfosulfuron were the best in terms of weed suppression and yield attributes. There was no impact of conventional tillage and minimum tillage on grain yield of wheat.
机译：在两种耕作系统（常规耕作和最低耕作）和五种杂草管理系统（非杂草控制，手工除草），磺胺磺隆@ 28 g ai / ha的出苗后施用，fenoxaprop-P-ethyl的出苗后施用中，小麦的杂草菌群和产量属性在尼泊尔Khumaltar，从2001-02到2002-03冬季，以100 g ai / ha和4 t / ha / t的稻草覆盖+ 26 g ai / ha的磺胺嘧啶进行了评估。最常见的窄叶杂草物种是Alopecuros aequalis和Phalaris minor，而阔叶双子叶植物是Chenopodium album，Coronopus didymus，Rumex crispus，Stellaria medium和唾液花粉病。与最小耕作相比，播种后第4周，传统耕作中的无水青枯菌，小P. P.，R。crispus和S. media的种群更多。在播种后第4和第8周，常规耕作中的窄叶杂草总种群高于最小耕作。与非诺沙普-P-乙基相比，磺嘧磺隆具有更广泛的杂草控制范围。磺胺磺隆同时抑制了窄叶和阔叶杂草。 Fenoxyprop-P-ethyl只抑制窄叶杂草，但不抑制像C. album，C。didymus，R。crispus，S。anthemifolia和S.media的阔叶杂草。在杂草处理方法中，就杂草抑制和产量特性而言，磺胺磺隆，手工除草剂和秸秆覆盖物+磺胺磺隆是最好的。常规耕作和最小耕作对小麦籽粒产量没有影响。

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