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首页> 外文期刊>Crop Research >Effect of different weed management practices on growth, nutrient uptake by transplanted rabi rice and weeds.
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Effect of different weed management practices on growth, nutrient uptake by transplanted rabi rice and weeds.

机译：不同杂草处理方法对移植的稻米和杂草生长，养分吸收的影响。

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摘要

A field experiment was conducted in Rajendranagar, Hyderabad, Andhra Pradesh, India, during the rabi of 2005 to study the effects of different weed management practices on rabi rice and weed growth and nutrient uptake. The soil of the experimental site was a slightly alkaline (pH 8.1) sandy clay loam soil with high available potassium content, and moderate concentrations of organic carbon, nitrogen and phosphorous. Hand weeding at 20 and 40 days after transplanting (DAT) resulted in the greatest plant height, dry matter production, number of tillers/m2 and nutrient uptake by crop, and lowest nutrient uptake by weeds throughout the crop growth period. Among the herbicidal treatments during the active tillering stage (around 25 DAT), the pre-emergence application of anilofos at 0.4 kg a.i./ha and oxadiargyl at 70.0 g a. i./ha recorded the highest values of growth parameters. At later stages (maximum tillering to harvest), anilofos at 0.3 kg a.i./ha + hand weeding at 25 DAT and oxadiargyl at 50 g a.i./ha + hand weeding at 25 DAT were superior. The highest grain and straw yields were registered by hand weeding at 20 and 40 DAT, followed by anilofos at 0.3 kg a.i./ha + hand weeding at 25 DAT and oxadiargyl 50 g a.i./ha + hand weeding at 25 DAT.
机译：2005年狂犬病期间，在印度安得拉邦海得拉巴的拉金德拉纳加尔进行了田间试验，研究了不同杂草处理措施对狂犬病水稻，杂草生长和养分吸收的影响。实验地点的土壤是弱碱性（pH 8.1）的沙质壤土，具有高的有效钾含量，以及中等浓度的有机碳，氮和磷。移栽后20和40天（DAT）的手工除草导致最大的株高，干物质产量，每平方米的分till数和作物吸收的养分，而整个作物生长期杂草吸收的养分最低。在主动分er阶段（约25 DAT）的除草处理中，出苗前施用anilofos（0.4 kg a.i./ha）和oxadiargyl（70.0 g a。）。 i./ha记录了最高的生长参数值。在以后的阶段（最大分till至收获），在25 DAT时网纹磷为0.3 kg a.i./ha +人工除草和在50 D a.i./ha时的草二炔+在25 DAT时较优。分别以20和40 DAT进行手工除草，其次是谷物和稻草的最高产量，然后以25 DAT的人工除草剂以0.3 kg a.i./ha +的手工除草和以25 DAT的草二甲酰50 g a.i./ha +手工除草。

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