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设施蔬菜栽培存在浇水多、施肥量大、病害严重的现象,如何实现设施蔬菜节水,在栽培中尤其重要。蔬菜病害严重、施肥过量、土壤盐渍化都与灌溉不合理有关,蔬菜实施节水技术,可以达到节水、省肥、减病和缓解土壤盐渍化等具有多重效果。设施蔬菜发病严重的重要原因就是设施内湿度过大,造成湿度过大的原因就是浇水多,蒸发量大。以温室黄瓜为例,平均10—15天浇水一次,每亩每次浇水量在20—30方左右。灌水量大
Vegetable cultivation There are many watering, fertilization, serious disease, how to achieve the facility water-saving vegetables, especially important in the cultivation. Vegetable diseases are serious, over-fertilization, soil salinization and irrational irrigation are related to the implementation of water-saving vegetables technology, water saving, fertility, disease reduction and mitigation of soil salinization and other multiple effects. An important reason for the serious incidence of vegetables vegetables is the humidity inside the facility is too large, resulting in excessive humidity is watering more, evaporation. Take greenhouse cucumber as an example, an average of 10-15 days of watering, watering at 20-30 square meters per acre. Large amount of irrigation