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一、设施番茄1、施肥存在的问题及施肥原则华北等北方地区多为日光温室,华中、西南地区多为中小拱棚,针对生产中存在过量施肥,氮、磷、钾化肥用量偏高,养分投入比例不合理,土壤氮、磷、钾养分积累明显,过量灌溉导致养分损失严重,土壤酸化现象普遍,土壤钙、镁、硼等元素供应出现障碍,连作障碍等导致土壤质量退化严重,养分吸收效率下降和蔬菜品质下降等问题,提出以下施肥原则:
First, the facilities of tomato 1, fertilization problems and principles of fertilization North China and other northern regions are mostly greenhouse, central and southern regions are mostly small and medium-sized shed, for the production of excessive fertilization, nitrogen, phosphorus and potassium high levels of fertilizer, nutrient input The unreasonable proportion of soil nitrogen, phosphorus and potassium accumulation of soil significantly, over-irrigation led to serious nutrient losses, soil acidification is widespread, soil calcium, magnesium, boron and other elements of supply barriers, continuous cropping obstacles lead to serious soil quality degradation, nutrient absorption efficiency Decline and decline in the quality of vegetables and other issues, put forward the following principles of fertilization: