红枣叶面积指数与产量的相关性分析

The Correlation Analysis of Leaf Area Index and Yield of Red Jujube

【目的】分析红枣叶面积与叶长×叶宽以及叶面积指数与产量之间的相关性。【方法】以新疆阿拉尔垦区的密植红枣园为研究对象,通过LA-S叶面积分析系统测算红枣叶面积。对红枣叶面积与叶长×叶宽、红枣叶面积指数(LAI)和产量的相关性进行分析。【结果】叶面积与叶长×叶宽关系密切,达到极显著水平,R2=0.990 3。红枣叶面积指数与产量之间也存在一定的相关性,在一定范围内产量随叶面积指数的增加而增加。【结论】测算叶片的长和宽可以估算出叶片的实际叶面积;通过控制栽培密度以及调整树形使叶面积指数达到较为合适的数值,以期提高产量。

[ Objective ] The relativity of leaf area and leaf length x leaf width of red jujube, leaf area index and the output of red jujube were analyzed. [ Method ] Density in the red jujube garden in the Alar reclamation area of Xinjiang were researched during the experiment, whose leaf areas were measured by LA - S leaf area analysis system. The aim is to research the relativity of leaf area and leaf length x leaf width of red jujube, leaf area index （LAI） and the output of red jujube. [ Result] Leaf area and leaf length x width have significant relationship, that is R2 = 0.990 3. At the same time there is certain correlation between the leaf area index and the yield of red jujube. The yield increases with the leaf area index increasing within a certain range. [Conclusion]The actual leaf area can be estimated by the results of the leaf length and width; Leaf area index can be adjusted to a suitable numerical number by the adjustment of planting density and the shape of the tree, thus improving the production.