1.调节水位栽植初期，田中保持有3～6厘米深浅水；生长旺盛期，逐步加深到15厘米左右；结藕期又宜浅水，以5～10厘米深为宜。水位的调节应本着由浅到深，再由深到浅的原则，应防止水位猛涨，淹没立叶，造成减产。2.中耕除草种藕栽后15～20天出现浮叶时，就要开始中耕除草。中耕 1. Adjusting the water level early planting, Tanaka to keep 3 to 6 cm deep water; growing vigorously and gradually deepened to about 15 cm; knot lotus root and should be shallow water to 5 to 10 cm deep appropriate. The water level should be adjusted in accordance with the principle of light to deep, then deep to shallow principle, should prevent the water level from rising, submerging the leaves, resulting in reduced production. 2. Cultivation weed species lotus root planted 15 to 20 days after floating leaves, it is necessary to start cultivating weeds. Cultivation