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锦橙叶片温度受气温和相对湿度的影响,但叶片的气扎阻力和蒸腾强度则由光照强度决定。阳面叶的蒸腾强度显著高于阴面叶。柑桔叶片气孔阻力与蒸腾强度呈双曲线负相关,阴、阳叶的模拟曲线不同,光量子数和气孔阻力与阳面叶的蒸腾强度间存在着交互作用,只有在一定的先量子数(>350μmol/s.cm ̄2)和气孔阻力(<8s/cm)阀值下,蒸腾强度才增加。施Mg可减小气孔阻力,提高蒸腾强度。K对蒸腾强度虽有削弱作用,但与适量的N,Zn配合后有助于蒸腾作用。叶片分析值表明,土壤供K特别是K,Mg同时施用对叶片中的K含量有显著作用。但叶片K,Mg含量与叶蒸腾强度及气孔阻力的相关性还有待研究。
The leaf temperature of Jincheng orange was influenced by the air temperature and relative humidity, but the air resistance and transpiration of leaves were determined by light intensity. The transpiration of the male leaf was significantly higher than that of the female leaf. There was a hyperbolic negative correlation between leaf stomatal resistance and transpiration intensity of citrus leaves. The simulated curves of yin and yang leaves were different. There was interaction between light quantum numbers and stomatal resistance and transpiration intensity of male leaf. Only when the number of first quantum (> 350μmol /s.cm ~ 2) and stomatal resistance (<8s / cm) threshold, the transpiration increased. Applying Mg can reduce stomatal resistance and improve transpiration strength. Although K has a weakened effect on transpiration, it helps transpiration with the appropriate amount of N and Zn. Leaf analysis showed that simultaneous application of soil K, especially K, Mg, had a significant effect on K content in the leaves. However, the correlation between leaf K, Mg content and leaf transpiration strength and stomatal resistance remains to be studied.