华北农学报 ›› 1993, Vol. 8 ›› Issue (1): 107-112. doi: 10.3321/j.issn:1000-7091.1993.01.021

所属专题: 小麦 水稻

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硬草对稻茬小麦产量损失及生态经济阈值的初步研究

尚嘉彦, 刘元荣, 李凤敏, 王健康   

  1. 河南省农科院植物保护研究所, 郑州 450002
  • 收稿日期:1991-12-11 出版日期:1993-03-28

A Preliminary Study on the Yield Loss of Wheat Caused by Sclerochloa kengiana and the Eco- economic Threshold of Weed Control

Shang Jiayan, Liu Yuanrong, Li Fengmin, Wang Jiankang   

  1. Plant Protection Institute, Henan Academy of Agricultural Sciences, Zhengzhou
  • Received:1991-12-11 Published:1993-03-28

摘要: 硬草(Sclerochloa kengiana)在一定密度范围内,密度越高,干重越大,对小麦产量损失越大。作者于1990年和1991年进行了硬草与稻茬冬小麦共生的田间试验及电算模拟研究。结果表明,硬草密度、干重、密重积与小麦产量之间的回归关系均呈幂函数关系。

关键词: 硬草, 小麦, 产量损失, 生态经济阈值

Abstract: Experiments were corried out during 1990 and 1991.The correlation between density, dry weight of Sclerochloa kengiana and yield economic properties of wheat were studied,and some regression models were made, Four control methods were used:artificial control, 25% chlorotoluron 0.3kg mu, 25% chlcrctoluicn10% thiobencarb (0.25+0.25) kg/mu,and 25% chlorotoluron+50%devrinol (0.25+0.075) kg/mu.The Eco-economic thresholds of controlling schercchlca Fengiana corresponding to the four methods of weed control are 30.56 plants/m2, 18.56 plants/m2, 20 plants/m2, 21.93 plants/2, respectively.

Key words: Selerochloa hengiana, Wheat, Yield loss, Eco-economic threshold

引用本文

尚嘉彦, 刘元荣, 李凤敏, 王健康. 硬草对稻茬小麦产量损失及生态经济阈值的初步研究[J]. 华北农学报, 1993, 8(1): 107-112. doi: 10.3321/j.issn:1000-7091.1993.01.021.

Shang Jiayan, Liu Yuanrong, Li Fengmin, Wang Jiankang. A Preliminary Study on the Yield Loss of Wheat Caused by Sclerochloa kengiana and the Eco- economic Threshold of Weed Control[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1993, 8(1): 107-112. doi: 10.3321/j.issn:1000-7091.1993.01.021.

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