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为更好地指导农民科学投入、合理施肥,结合近年饶阳县配方施肥技术的开展,以及肥料田间试验、示范效应分析,提出冬小麦施肥建议,供农民朋友参考。一、冬小麦对营养元素的需求冬小麦生长期较长,需养分较多,据研究表明,每生产100千克籽粒,约需纯氮3.1±1.1千克,磷(P_2O_5)1.1±0.3千克,钾(K_2O)3.2±0.6千克,氮、磷、钾吸收比例约为2.8:1:3,随着产量水平的提高,小麦对氮、磷、钾的吸收总量相应增加,但随着产量水平的进一步提高,对氮的吸收
In order to better guide farmers scientific input, fertilization, combined with the recent development of formula fertilizer technology in Raoyang County, as well as fertilizer field trials, demonstration effect analysis, proposed winter wheat fertilization recommendations for farmers and friends. First, the demand of winter wheat for nutrients Winter wheat growing longer, more nutrients required, according to the study showed that each production of 100 kg of grain, about 3.1 ± 1.1 kg of pure nitrogen, phosphorus (P_2O_5) 1.1 ± 0.3 kg, potassium (K_2O ) 3.2 ± 0.6 kg. The absorption ratio of nitrogen, phosphorus and potassium was about 2.8: 1: 3. With the increase of the yield, the total nitrogen, phosphorus and potassium absorption of wheat increased correspondingly, but with the further increase of the yield , The absorption of nitrogen