摘要
利用力学理论和方法,考虑根部与土壤的锚固强度,分析成熟期水稻植株在临界力作用下的稳定问题.推导出不同转动刚度情况下,植株倒伏的临界力表达式.根据此关系式,可对水稻的抗倒伏能力进行综合评价和预测,为水稻抗倒品种的选育、收获机械的设计、桔秆的综合利用提供理论依据.
The dynamic theory and methods are used to analyse the stability of rice steam in automn according to the anchor intensity,which undertakes different critical forces. Then, some critical force formulas about rice lodging would be gotten under different turning rigidity. According to this formula, we can get a total evaluation and prediction about rice stem lodging resistance. The theoretical basis is provided for choosing variety and designing machine and comprehensive utilization of stem.
出处
《河南科学》
2008年第8期910-911,共2页
Henan Science
关键词
水稻
倒伏
临界力
rice lodging critical force
