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在化肥施用量越来越大的情况下,研究科学施肥,提高施肥效益,当为十分必要。但多年来,国内外在施肥研究上多针对单项作物进行,对北方旱作区小麦玉米一年两熟制的施肥研究尚少,更未形成系统。我省中、南部地区,冬小麦与夏玉米一年两熟是主要种植形式之一,按照其内在联系和自身的系统规律,确定其合理的施肥量及施肥方法,是促进夏秋粮均衡
In the case of more and more chemical fertilizer application, it is very necessary to study scientific fertilization and improve fertilization efficiency. However, over the years, fertilization research both at home and abroad has focused on single crops. There is still little research on the fertilization of wheat and corn in the north dry area of wheat in one year and no system has been formed yet. In the middle and southern areas of our province, winter wheat and summer maize are one of the main planting forms in one year. According to their internal relations and their own systematic laws, the reasonable fertilization amount and fertilization method are determined to promote summer-autumn grain balance