水是柑桔生命代谢不可缺少的重要物质。水分不足或过多,造成生理代谢活动的停顿,生长发育受阻,甚至引起根系干枯、腐烂,造成落叶、枯枝、落花落果,乃至植株死亡。因此,坚持合理排灌,促进土壤水、肥、气、热协调,是实现柑桔稳产高产优质的关键。 我国南方柑桔产区,一般春季多雨,土壤容易渍水、桔树缺氧烂根,造成生长发育不良,落花落果严重。因此,要加强桔园的抽沟排水工作,特别是平地低洼桔园防涝 Water is an indispensable important substance of citrus life metabolism. Water shortage or too much, resulting in the pause of physiological and metabolic activity, growth and development blocked, and even cause root blight, decay, resulting in deciduous, dead branches, flowers and deciduous, and even plant death. Therefore, insist on rational irrigation and drainage, and promote the coordination of soil water, fertilizer, gas and heat, is the key to achieve high yield and quality of citrus. Southern citrus producing areas in our country, the general spring rainy, easy to soil waterlogging, orange root rot, resulting in poor growth and development, falling serious. Therefore, it is necessary to strengthen the work of draining and draining the orange groves, especially the low-lying orange orchards on the flat ground to prevent waterlogging