【摘要】 采取田间小区试验,研究了不同施肥处理对宁乡市晚稻产量、养分吸收量、肥料利用率的影响。结果表明:无论是常规施肥还是配方施肥,对晚稻产量影响最明显的是氮肥,其次是钾肥,磷肥的影响最小。配方施肥籽粒产量最高为7 008 kg/hm~2,比常规施肥增产424.5 kg/hm~2,增幅6.4%。晚稻100 kg经济产量氮养分吸收量明显高于其他处理;配方施肥100 kg经济产量氮磷钾养分吸收量分别为1.99、0.62和1.15 kg。配方施肥氮磷钾肥料利用率分别为57.70%、32.63%和49.70%,分别比常规施肥高25.16、2.03和3.84个百分点。更多还原

【Abstract】 Field trials were conducted to study the effects of different fertilization treatments on the yield, nutrient uptake and fertilizer utilization rate of late rice in Ningxiang City. The results showed that whether it was conventional fertilization or formula fertilization, the most obvious effect on the yield of late rice was nitrogen fertilizer, followed by potassium fertilizer, and the effect of phosphate fertilizer was again. The yield of formula fertilized seeds was up to 7008 kg/hm~2, which was 424.5 kg/hm~2 higher than conventional fertilization,an increase of 6.4%. The nitrogen nutrient uptake of the economic yield of late rice was significantly higher than that of other treatments;the nutrient uptake of nitrogen, phosphorus and potassium in the economic yield of formula fertilization was 1.99, 0.62 and 1.15 kg,respectively. The utilization rate of NPK fertilizer was 57.70%, 32.63% and 49.70%, respectively, which were 25.16, 2.02 and 3.84 percentage points higher than conventional fertilization.更多还原