【摘要】 ３０个红麻品种在盆栽或大田无株间相互荫蔽条件下测定的单株干物重（Ｗ）表明，不同季节的苗期试验和生长中期试验的Ｗ的品种间差异极显著；２次苗期试验之间以及苗期试验与生长中期试验之间Ｗ存在密切相关关系。单株叶面积（ＬＡ）、净同化率（ＮＡＲ）和单株比叶重（ＳＬＷ）之间的相关分析表明，苗期试验的ＬＡ与ＮＡＲ呈极显著正相关，而苗期其他因素之间以及生长中期各因素之间无显著相关关系。光合性状对Ｗ的通径系数分析表明，ＬＡ是影响Ｗ的主导因素。因此，在育种上，选择具有较大ＬＡ或ＬＡ较快发展的品种很重要；而在高产栽培实践中如何促进ＬＡ的发展也很重要。更多还原

【Abstract】 The dry weight per plant (W) of 30 varieties of kenaf(Hibiscus cannabinus L.)was determined in different growing seasons and growing stages under pot cultureand field condition. The significantly varietal difference in W was found; the closelypositive correlation in W was also found between two seedling experiments and be-tween seedling and mid一growing stage. The correlation analysis among the leaf areaper plant(LA), net assimilation rate(NAR)and specific leaf weight(SLW) showedthat, there exists significantly positive correlation between LA and NAR in seedlingstage, whereas there exists no significant correlation among other factors. Moreover,the path一coefficient analysis on LA, NAR and SLW aganist W showed LA doesmore in increasing W than NAR and SLW do. Therefore,it is important to selectthe varieties with larger LA or rapid一developing LA, and to promote a proficientdevelopment of LA, leaf area index or leaf area duration in culture practice of kenaf.更多还原