试验方法同上。试验结果表明,矮壮素处理对苹果叶内叶绿素和类胡卜素的积累有良好影响。同时,矮壮素通过生长过程中叶色素化学抗性的提高来稳定光合作用系统,增加叶器官对有效光合辐射的吸收。喷矮壮素能增强苹果树的适旱性。叶面增厚(主要依靠栅状组织)增加了色素积累和对有效光合辐射的吸收。矮壮素的作用还表现在改善苹果树氮的代谢方面:处理树的叶和新梢氮的含量有所提高,新梢蛋白质的含量也明显增加。如配合使用化肥,则矮壮素的效果最 Test methods Ibid. The results showed that CCC had a good effect on the accumulation of chlorophyll and carotenoids in apple leaves. At the same time, CCC stabilizes the photosynthesis system by increasing the chemical resistance of the leaf pigments during growth, and increases the absorption of photosynthetic radiation by leaf organs. Spit chlorin can enhance the drought tolerance of apple trees. Increased foliar thickening (mainly by palisade) increases pigment accumulation and absorption of effective photosynthetic radiation. Chlormequat’s role is also reflected in the improvement of nitrogen metabolism in apple trees: treatment leaves and shoots nitrogen content increased, the shoot tip protein content also increased significantly. As with the use of fertilizers, the most effect of CCC