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作物需水包括生理需水和生态需水两个方面。作物生理需水是指其生命过程中的各项生理活动(如蒸腾作用、光合作用等)所需要的水分。生态需水是指生育过程中,为给作物正常生长发育创造良好的生活环境所需要的水分。茶园土壤水分的消耗,是通过地面植被(包括茶树、间作物、杂草等)的根系吸收,枝叶蒸腾,行间土壤蒸发,地表迳流和土壤深层渗流等途径而散失,其中又以茶树蒸腾与行间土壤蒸发为主。当茶园地下水位较低,其土
Crop water demand includes physiological water demand and ecological water demand. Physiological water demand refers to the water required for various physiological activities (such as transpiration, photosynthesis, etc.) in the course of their life. Ecological water demand refers to the process of fertility, in order to give crops normal growth and development to create a good living environment, the water needed. The consumption of soil moisture in the tea plantation is dissipated through the root absorption of the ground vegetation (including tea trees, inter-crop crops, weeds, etc.), the transpiration of branches and leaves, the evaporation of soil between the lines, the surface turbulence and deep seepage of soil. Among them, Soil evaporation between the main lines. When the tea plantation groundwater level is lower, its soil