传统施肥对水稻性状及氮肥利用的影响

目的]探讨传统施肥模式对水稻性状的影响以及氮肥吸收利用情况。方法]以扬两优6号为供试品种,设108.0、154.5、201.0kg/hm2 3个施氮水平,以不施氮肥为对照,采用传统的施肥技术。结果]高峰苗、有效穗、株高、穗总粒数、干物质积累量、吸氮量等性状均随着氮肥施用量的增加而增加,结实率和千粒重随着氮肥施用量的增加而降低;产量随施氮量的增加而增加,但达到一定程度后开始下降;氮肥利用率随着施氮量的增加而升高,但普遍较低,不超过23.00%。结论]传统施肥模式不利于水稻的生长及氮肥的利用,建议实施科学施肥,减少氮肥资源浪费,提高肥料利用率。

Influence of Traditional Fertilization on the Property of Rice and Application of Nitrogen Manure

Objective] To discuss the influence of traditional fertilization on the property of rice and application of nitrogen manure.Method] Taking Yangliangyou No.6 as test species,three nitrogen fertilization levels were applied 108.0、154.5、201.0 kg/hm2.Taking no nitrogen manure as comparison,traditional fertilization technology was adopted.Result] Peak seedling,effective earring,strain height,total particles of ears,accumulation of dry product and assumption of nitrogen increased along with the increase of nitrogen fertilization.The fruit rate and particles weight reduced along with the increase of nitrogen fertilization.The output first increase with nitrogen and then began to decline when it came to certain degree.The application rate of nitrogen manure enhanced with the increase of nitrogen doses.But it was low,less than 23.00%.Conclusion] Traditional fertilization mode prohibited the growth of rice and application of nitrogen.It was suggested to use fertilizer scientifically,to reduce nitrogen resources losses and to improve fertilizer application rate.