文献类型：期刊文献

中文题名：作物茎秆抗倒伏的力学分析及综合评价探讨

英文题名：Dynamic Analysis and Comprehensive Evaluation of Crop-Stem Lodging Resistance

作者：袁志华[1];冯宝萍[2];赵安庆[1];梁爱琴[1]

第一作者：袁志华

机构：[1]河南农业大学;[2]新乡市教育学院

第一机构：河南农业大学

年份：2002

卷号：18

期号：6

起止页码：30-31

中文期刊名：农业工程学报

外文期刊名：Transactions of The Chinese Society of Agricultural Engineering

收录：CSTPCD;;Scopus;北大核心:【北大核心2000】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：作物茎秆;抗倒伏;力学分析;综合评价;势能驻值原理;临界力;倒伏机制

外文关键词：lodger resistance; crop stem; principle of potential energy; critical force

摘要：建立了农作物茎秆的力学模型 ,利用力学理论和方法 ,给出了农作物茎秆临界力的具体表达式 ,该表达式对于多种农作物例如 :玉米、水稻、小麦、谷物等都是适用的。根据该表达式 ,可对农作物的抗倒伏能力进行综合评价 ,临界力越大 ,抗倒伏能力越强。临界力可以作为农作物抗倒伏能力评价的通用指标。对于同一种作物品种 ,种植密度不同 ,或肥力不同 ,其抗倒伏能力不同 ,茎秆系数越小 ,抗倒伏能力越强。茎秆系数可作为同一品种作物间 ,抗倒伏能力的评价指标。文中给出了农作物倒伏与茎秆各物理量之间的关系 ,为作物抗倒品种的选育、收获机械的设计、桔秆的综合利用提供参考。
A dynamic model for crop-stem lodging resistance was established, and a formula about critical force of crop-stem was extracted by using dynamic theory and method. This formula is suitable to several crops, such as maize, rice, wheat, and corn. According to this formula, a comprehensive evaluation regarding crop-stem lodging resistance was obtained. The results showed that the bigger the critical force, the stronger the crop-stem lodging resistance. Critical force is a current physics parameter to evaluate crop-stem lodging resistance. In the same kind of crop, if planting density or fertility of soil is different, the crop-stem lodging resistance will be different. The smaller the value of stem coefficient is, the stronger the crop-stem lodging resistance is. Stem coefficient is a physics parameter that evaluates crop-stem lodging resistance in the same kind of crop. The relationship between crop-stem lodging resistance and physics parameters of crop-stem was inferred. This can provide references for choosing variefies of crop, designing machines an comprehensively utilizing stem.