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冬小麦的施肥量与播种期之间的关系,以往都认为应根据施肥状况改变播种期,在生产实践中,不同时期播种的冬小麦,其本身发育和对营养元素的吸收量显著不同。HET C N.T1977—1979年的试验,早播的冬小囊,吸收的氮量为202公斤/公顷,最适期播种的为189公斤/公顷,晚播的仅109公斤/公顷。钾的吸收量相应为226、224、133公斤/公顷。由于不同龄的冬小麦对营养元素的需要量显著不同,所以必须进行不同的施肥。HETNC N.T1983—1985牟研究了施肥效果与播种期的关系。结果表明,施肥效果取决于播种期,而最造播种期又取
The relationship between the amount of winter wheat fertilization and sowing date, in the past that the sowing period should be changed according to fertilization conditions in the production practice, sowing at different periods of winter wheat, its own development and nutrient absorption was significantly different. HET C N. From 1977 to 1979, early-sowed winter sacs absorbed 202 kg ha-1 of nitrogen, 189 kg ha-1 for the most suitable seeding period and 109 kg ha-1 for late-sowing. The amount of potassium absorbed corresponds to 226,224,133 kg / ha. Due to the significant differences in the nutrient requirements of winter wheat at different ages, different fertilizations have to be carried out. HETNC N.T1983-1985 Mu study the relationship between fertilization and sowing date. The results show that the effect of fertilization depends on the sowing period, but the most sowing period and take