荸荠是一种产量高,效益好的经济作物。我们根据近几年的实践,总结出一套切实可行综防措施。 一、栽培防病 1.合理轮作:土壤带菌是荸荠病害的主要传染源,故荠田不宜连作,应坚持轮作。 2.科学管理:选择耕层浅、土质疏松,肥力中上的田块,种植密度为3500—4000株/亩,每穴3—4苗(分蘖苗),行株距为40-33cm。管理上按照:活棵还苗期,实行浅木勤灌、灌保分株。分株高峰期,坚持干干湿湿,以 Water chestnut is a high yield, good economic crops. According to the practice in recent years, we have concluded a set of practical comprehensive defense measures. First, the cultivation of disease prevention 1. Reasonable rotation: soil contamination is the main source of water chestnut disease infection, so chestnut field should not be linked, should insist on rotation. 2.Scientific management: choose shallow tillage, loose soil, fertility in the field plots, planting density of 3500-4000 plants / mu, 3-4 per hole (tillering seedlings) line spacing of 40-33cm. Management in accordance with: live trees also seedling, the implementation of shallow shrubs, irrigation Paul ramets. Ramets peak, adhere to dry wet, with