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玉米秸稈抗根倒伏強(qiáng)度檢測(cè)方法
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國家高技術(shù)研究發(fā)展計(jì)劃（863計(jì)劃）資助項(xiàng)目（2006AA100103）和國家玉米產(chǎn)業(yè)技術(shù)體系資助項(xiàng)目（nycytx-02）


Strength Evaluation of Root Lodging Resistance in Maize Stalk
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    摘要:

    研究了玉米秸稈抗根倒伏強(qiáng)度檢測(cè)方法并設(shè)計(jì)了相應(yīng)的檢測(cè)儀。將玉米秸稈簡(jiǎn)化為懸臂梁力學(xué)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(qiáng)度的參數(shù)。設(shè)計(jì)了由螺旋機(jī)構(gòu)、活動(dòng)三角架平臺(tái)、夾具和數(shù)字顯示儀等組成的玉米秸稈抗根倒伏強(qiáng)度檢測(cè)儀。采用手輪對(duì)螺旋機(jī)構(gòu)施力的方式，使操作者施加的力僅為被測(cè)量值的1/97；夾具采用雙重夾緊裝置以適應(yīng)不同直徑的玉米秸稈。試驗(yàn)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(fù)相關(guān)性。

    Abstract:

    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(qiáng)度檢測(cè)方法[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),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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