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Study on Analysis Model of Millet Yield Loss Caused by Weeds in Summer Season Millet Field

作者：

Weixin Lv;Peng Peng;Duan;Xishun;Ming Liu;Hongxia;Hou;Shenglin;Bo Bo;Kuiyong;Hong Wang;* Xin-Yu;Xiang Xia;Ji-nying;Zhenqiang Ma;Xiao Xue;Jia Jia;Haiyan Haiyan;Quan Zhou;Hanzhan

关键词：

millet;weeds;summer season;competition;field;foxtail mille

摘要：

Weed management in summer season foxtail millet field was studied by evaluating weed damage and exploring competition between weeds and foxtail millet,and a few fitting models were simulated and compared by employing field plot experiment and nonlinear regression analysis.The results showed that the millet yield losses and weed density were extremely significantly correlated.Among the tested models,the determination coefficient (R 2) of hyperbolic model was 0.997 12,and minimum residual sum of squares was 16.174,which was considered the optimal model to simulate the competition relation between weeds and millet.The predicted equation was Y=d /(1.733 + 0.018d);the interspecific competitiveness of weeds was 0.577 0 and the intraspecific competitiveness was 0.010 3 ;the maximum loss rate of millet yield was 55.56%.This study had established an analysis model with high goodness-of-fit and practical prediction which could help weed management in summer season millet field.

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Study on Analysis Model of Millet Yield Loss Caused by Weeds in Summer Season Millet Field

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植物病虫害研究(英文版)

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农业科学学报 (英文)

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