| 不同耕作方式对玉米田杂草发生规律及产量的影响 |
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| 引用本文： | 樊翠芹,王贵启,李秉华,许贤.不同耕作方式对玉米田杂草发生规律及产量的影响[J].中国农学通报,2009,25(10):207-211. |
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| 作者姓名： | 樊翠芹 王贵启 李秉华 许贤 |
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| 作者单位： | 河北省农林科学院粮油作物研究所,石家庄,050031 |
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| 基金项目： | 国家科技支撑重大项目 |
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| 摘 要： | 摘要：研究了小麦－玉米一年两熟制农田，在免耕覆盖麦秸、免耕、旋耕三种耕作方式下，玉米田杂草发生规律、喷施玉农乐对杂草的防除效果及对玉米产量的影响。结果表明：不同耕作方式杂草种类差异不大，免耕覆盖麦秸的杂草数量比免耕不覆盖的降低53％-82％，比旋耕的降低了62％-78％。玉农乐30g/hm2处理，免耕覆盖麦秸的防效最好，免耕不覆盖和旋耕田差异不大；玉米田免耕覆盖麦秸，能降低玉农乐的用药量。免耕覆盖麦秸玉米出苗率降低，但是穗粒数、百粒重及产量增加；玉农乐45-60g/hm2处理，不同耕作方式中其产量差异不大；玉农乐30g/hm2处理和对照小区的产量，免耕覆盖麦秸的最高。
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| 关 键 词： | 农业气象灾害 农业气象灾害 变化特征 防灾措施 |
| 收稿时间： | 2009-02-16 |
| 修稿时间： | 2009-03-18 |
Effects of Different Tillage Methods on Weed Dynamics and Yield in Corn Field |
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| FAN Cui-Qin.Effects of Different Tillage Methods on Weed Dynamics and Yield in Corn Field[J].Chinese Agricultural Science Bulletin,2009,25(10):207-211. |
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| Authors: | FAN Cui-Qin |
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| Institution: | 1. Institute of Cereal and Oil Crops,Hebei Academy of Agriculture and Forestry Sciences
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| Abstract: | Abstract: Field experiment was conducted to study effects of different tillage methods on weed dynamics and weeds control efficiency of nicosulfuron spraying in 2-4 leaf stage of weed and yield of corn in wheat-maize double cropping system. The results showed that weed communities had little different in different tillage methods. The numbers of weed reduced 53%-82% comparing with the plot of wheat stalk-covering and no tillage, and reduced 62%-78% comparing with the plot of wheat stalk-covering and rotary tillage. At the rate of 30g/hm2 of nicosulfuron weeds control efficiency in wheat stalk-covering was the best in three tillage methods. The emergence percentage of corn were lower in wheat stalk-covering than that in no tillage and rotary tillage, but it’s seeds per ear , 100-seeds weight and the yield of corn were higher. At the rate of 45-60g/hm2, the yield of corn had little different in different tillage methods. At the rate of 30g/hm2 of nicosulfuron and CK, the yield of corn in wheat stalk-covering was the highest in different tillage methods. |
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| Keywords: | No tillagezz Rotary tillagezz Maizezz Weedzz Yieldzz |
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