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首页> 外文期刊>Indian Journal of Weed Science >Weed control and nitrogen levels on performance of wet seeded rice
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Weed control and nitrogen levels on performance of wet seeded rice

机译：杂草防治和氮素水平对湿稻性能的影响

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摘要

Weeds pose greater constraints in realising higher yield in wet seeded rice than in transplanted rice because of simultaneous germination of both rice and weed seeds. The extent of yield reduction due to weeds has been 15-20 percent in transplanted rice, 30-35 percent in direct seeded rice and more than 50 percent in upland rice (Pillai and Rao, 1974). Use of higher nitrogen to realise higher yields in absence of suitable weed management harms the crop by favouring weed growth (Moody, 1981). Weed control is critical and difficult in wet seeded rice. As manual weeding and other methods are expensive and labour intensive, use of herbicide for control of weeds is an effective alternative. The present study was carried out to elicit the effect of various herbicides and nitrogen levels on performance of crop and weeds in wet seeded rice.
机译：由于水稻和杂草种子同时发芽，因此杂草在湿润水稻中比在移植水稻中获得更高的产量受到更大的限制。杂草导致的减产程度在移栽水稻中为15-20％，在直接播种水稻中为30-35％，在陆稻中为50％以上（Pillai and Rao，1974）。在没有适当的杂草管理的情况下使用较高的氮来实现更高的产量会通过促进杂草生长而损害作物（Moody，1981）。湿种子稻田中的杂草控制至关重要且困难。由于人工除草和其他方法价格昂贵且劳动强度大，因此使用除草剂控制杂草是一种有效的替代方法。进行本研究是为了研究各种除草剂和氮水平对湿稻中农作物和杂草生长的影响。

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