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通过对高粱茎秆抗倒伏性状(株高、茎粗、地上部重、根重、重心高度、抗折力及茎秆机械强度)的测定,提出高粱倒伏系数评价方法,通过相关分析及通径分析,得出抗折力与倒伏系数呈极显著负相关,抗折力和地上部重对倒伏系数影响最大,地上部重通过抗折力对倒伏系数的间接作用最大。研究结果表明,利用倒伏系数来评价高粱的抗倒伏能力是可行的。生产中应该选用茎秆抗折力大、粗壮、根系发达的品种。
Through the determination of sorghum stem lodging resistance (plant height, stem diameter, aboveground weight, root weight, center of gravity, bending strength and mechanical strength of stem) sorghum lodging coefficient evaluation method was proposed, through correlation analysis and path It is concluded that there is a significant negative correlation between the bending strength and the bending coefficient. The bending strength and the overground weight have the greatest influence on the bending coefficient. The indirect effect of the bending weight on the bending coefficient is the largest. The results show that the use of lodging coefficient to evaluate the sorghum lodging capacity is feasible. The production of stem should be used to resist large, sturdy, well-developed varieties.