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玉米秸稈抗根倒伏強度檢測方法
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國家高技術研究發(fā)展計劃（863計劃）資助項目（2006AA100103）和國家玉米產業(yè)技術體系資助項目（nycytx-02）


Strength Evaluation of Root Lodging Resistance in Maize Stalk
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    研究了玉米秸稈抗根倒伏強度檢測方法并設計了相應的檢測儀。將玉米秸稈簡化為懸臂梁力學模型，以植株的最大垂直拔根阻力作為衡量玉米秸稈抗根倒伏強度的參數(shù)。設計了由螺旋機構、活動三角架平臺、夾具和數(shù)字顯示儀等組成的玉米秸稈抗根倒伏強度檢測儀。采用手輪對螺旋機構施力的方式，使操作者施加的力僅為被測量值的1/97；夾具采用雙重夾緊裝置以適應不同直徑的玉米秸稈。試驗表明，玉米秸稈的最大垂直拔根阻力與根倒率之間存在著負相關性。

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    A method of evaluating strength of root lodging resistance in maize stalk was developed. It constructed a mechanical model of cantilever beam to describe maize stalk. The maximum vertical root-pulling resistance was used as a measurand for evaluating the strength of root lodging resistance in maize stalk. A measuring instrument was designed which consisted of a screw mechanism, an activities tripod platform, a gripper and measurement parts. Force which was transferred to the screw mechanism with the help of a hand wheel was only 1/97 of the maximum vertical root pulling resistance. The gripper with two different devices could clamp most of the maize stalks with different diameters. Field experiments showed a significant negative correlation existed between maximum vertical root-pulling resistance and root lodging.

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李偉,吳科斌,陳艷軍,張俊雄,李建生.玉米秸稈抗根倒伏強度檢測方法[J].農業(yè)機械學報,2012,43(2):66-69. Li Wei, Wu Kebin, Chen Yanjun, Zhang Junxiong, Li Jiansheng. Strength Evaluation of Root Lodging Resistance in Maize Stalk[J]. Transactions of the Chinese Society for Agricultural Machinery,2012,43(2):66-69.

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  • 在線發(fā)布日期: 2012-02-17
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