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在新疆阿克苏地区,以核桃树、枣树、苹果树、梨树为试验材料,利用HemiView数字植物冠层分析仪器,对新疆阿克苏温宿县试验基地内沟灌条件下的5年生果树进行冠层参数比较,分析计算不同种类果树的冠层参数,研究不同种类果树冠层参数之间的差异。结果表明:在沟灌条件下,不同种类果树叶面积指数的排列顺序为核桃树>枣树>苹果树>梨树;透光率的排列顺序为梨树>苹果树>枣树>核桃树;平均叶倾角的排列顺序为核桃树>枣树>苹果树>梨树;截获辐射能的排列顺序为核桃树>枣树>苹果树>梨树。在相同条件下,核桃树叶面积指数与透光率呈极显著负相关;枣树、苹果树、梨树的叶面积指数与透光率呈负相关关系、与截获辐射能呈正相关关系,而透光率与截获辐射能呈负相关关系。
In Aksu region, Xinjiang, walnut trees, jujube trees, apple trees and pear trees were used as experimental materials and the canopy parameters of five-year-old fruit trees under furrow irrigation in Aksu Wensu County, Xinjiang Uygur Autonomous Region were studied using HemiView digital plant canopy analysis instrument Compare and analyze the canopy parameters of different types of fruit trees and study the differences of canopy parameters between different kinds of fruit trees. The results showed that under the conditions of furrow irrigation, the order of leaf area index of different types of fruit trees was walnut tree> jujube tree> apple tree> pear tree; the order of light transmittance was pear tree> apple tree> jujube tree> walnut tree; The order of leaf dip angle was walnut tree> jujube tree> apple tree> pear tree; the order of intercepted radiation energy was walnut tree> jujube tree> apple tree> pear tree. Under the same conditions, the leaf area index of walnut showed extremely significant negative correlation with light transmittance. The leaf area index of jujube tree, apple tree and pear tree had a negative correlation with light transmittance and a positive correlation with intercepted radiation energy, There is a negative correlation between light rate and intercepted radiant energy.