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近年来,关于随同灌溉水进行施肥问题的研究,在国外引起特别的重视。这个问题,狭义的讲是指随同喷灌施用营养物质,广义的讲则指随同任何灌水方式施肥。灌溉式施肥有许多优点。例如,肥料随灌溉水迅速渗入根系层,能立即被作物吸收,因而提高了肥料(特别是氮肥)的效果;使养分在土壤中的分布均匀;能延长肥力期限,提高作物产量,节省劳力、
In recent years, research on fertilization with irrigation water has drawn special attention abroad. This question, in a narrow sense, refers to the application of nutrients along with sprinkler irrigation. In a broad sense, it means fertilizing with any irrigation method. Irrigation has many advantages. Fertilizers, for example, rapidly penetrate into the root layer with irrigation water and are immediately absorbed by the crop, thereby increasing the effectiveness of fertilizers, especially nitrogenous fertilizers; making the nutrients evenly distributed in the soil; extending the fertility period, increasing crop yields and saving labor,