论文部分内容阅读
一是错误地认为施肥量越大长得越多。有许多菜农往温室菜地大量投肥,以求高产,但有的却事与愿违。其实蔬菜正常生长所需的土壤全盐含量浓度为2000—3000毫克/公斤,超过6500毫克/公斤根系会出现反渗透而枯死,产量自然会下降或生长不好。特别是温室内温度高,湿度大,有机肥分解快,磷
First, mistakenly think that the greater the amount of fertilizer grow more. There are many vegetable farmers to fertilize a large number of greenhouse vegetables in order to yield, but others do not match. In fact, the normal growth of vegetables required for soil total salt concentration of 2000-3000 mg / kg, more than 6500 mg / kg root reverse osmosis and will die, the output will naturally decline or poor growth. Especially in the greenhouse temperature is high, humidity, decomposition of organic fertilizer fast, phosphorus