【摘要】 通过不同施肥处理苜蓿群体数量特征对草产量的通径分析,得出各因子对苜蓿草产量的相关程度排序为:叶占整株比例>植株高度>分枝数,而直接作用力的影响为:叶占整株比例>分枝数>植株高度,各因子的直接作用和间接作用随着群体内外因素的影响在排序上发生变化。通过分析决定系数的代数和可以避免漏掉重要因素对苜蓿草产量的影响。更多还原

【Abstract】 This trial is about study on path coefficient analysis between alfalfa population characters and forage yield in different fertilization.factor ranks to alfalfa forage yield are as follow.leaf percentage >plant height>ramification number,but ranks in direct contribution of the factor are leaf percentage> ramification number>plant height.Patterns of direct and indirect contributions different in rank.this will not leak important factor function by analysis sum of path coefficient.更多还原