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近年来,冲施肥以见效快备受农民欢迎,但目前大部分冲施肥以氮肥为主,磷量少,钾不足,钙、镁等微量元素为零,也有部分含腐殖酸。由于冲施效果仅限于表层,加上地膜覆盖,地温高,表层根多,如果遇到低温寒流或劣质冲施肥,难免造成烧根或烂根。为此,建议在棚菜生产中,施肥应做到“四结合”。
In recent years, flushing fertilizer to be quick and ready by the farmers welcomed, but most of the current Chong fertilization nitrogen-based, less phosphorus, potassium deficiency, calcium, magnesium and other trace elements to zero, but also some contain humic acid. As the impact of Chong Shi is limited to the surface, with mulching, high ground temperature, the surface roots and more, if encountered cold or poor cold red fertilization, will inevitably cause burning or rotten roots. To this end, it is recommended in greenhouse production, fertilization should be done “four combinations ”.