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2013年10月-2014年6月在河南省商丘市民权县布置田间小区试验,研究施用控释BB肥对冬小麦产量及其构成要素、植株各部位对氮素吸收与累积及氮肥利用率的影响。结果表明,施用控释BB肥在所有处理中效果最佳,较农民习惯施肥在穗粒数、理论产量、实际产量、生物产量及收获指数等指标上分别增加20.61%、27.08%、8.41%、5.87%、4.44%;在籽粒氮质量分数、氮素累积量上分别增加24.81%、28.47%;在氮肥利用效率、氮肥贡献率上较农民习惯施肥分别增加89.56%、15.24%。施用控释BB肥在减氮20%的条件下,较农民习惯施肥和普通BB肥在冬小麦产量上没有显著的影响,但提高植株各部位对氮素的吸收及累积作用,同时明显提高氮肥的利用效率。说明,施用控释BB肥可以明显提高冬小麦产量及其构成要素,增加植株对氮素的吸收及累积量,提高氮肥利用率。
October 2013 -2014 June in Shangqiu City, Henan Province, civil rights and county layout of field plots to study the application of controlled release BB fertilizer on winter wheat yield and its components, plant parts of the nitrogen absorption and accumulation and nitrogen utilization efficiency . The results showed that the application of controlled release BB fertilizer had the best effect in all the treatments, which increased by 20.61%, 27.08% and 8.41% respectively compared with the peasants’ habitual fertilization on the indexes of grain yield, theoretical yield, actual yield, biological yield and harvest index, 5.87% and 4.44%, respectively, increased by 24.81% and 28.47% in the N content and N accumulation, respectively. The nitrogen use efficiency and the contribution rate of nitrogen fertilizer increased by 89.56% and 15.24% respectively than that of peasants. Controlled-release BB fertilizer had no significant effect on winter wheat yield compared with peasants’ conventional fertilization and ordinary BB fertilizer under the condition of 20% nitrogen reduction, but increased the absorption and accumulation of nitrogen in all parts of the plant, usage efficiency. This indicated that the application of controlled release BB fertilizer could obviously increase the yield and its components of winter wheat, increase the absorption and accumulation of nitrogen and increase the nitrogen use efficiency.