云南农业大学学报2011，Vol.26Issue(3)：376-381,388,7.DOI:10.3969/j.issn.1004-390X(n).2011.03.017
不同氮肥用量对元阳梯田水稻产量及构成因素的影响
Effects of Different Nitrogen Fertilizer Use Level on Yield Component and Grain Yield in Yuanyang Terrace
摘要
Abstract
o study the effects of different nitrogen fertilizer use levels on local traditional and introduced rice varieties in Yuanyang terrace, the nitrogen uptake, diseased index and yield of Yuelianggu (traditional) and Chu 26 (introduced) were analyzed in the different nitrogen treatments.The experimental results showed that, with the increase of nitrogenous fertilizer inputs, the yield of Yuelianggu declined, rice blast happened, nitrogen uptake efficiency and nitrogen utilization efficiency went down.The yield of treatment 2 (7 500 kg/hm2 organic fertilizer) had raised 14％ , 10％ and 11％ , respectively, compared with that of treatment 1 (without fertilizer) , treatment 3(7 500 kg/hm2 organic fertilizer + 75 kg/ hm2 nitrogen fertilizer) and treatment 4(7 500 kg/hm2 organic fertilizer + 150 kg/ hm2 nitrogen fertilizer).Meanwhile, the Chu 26 had positive responds to the exogenous ac-tive nitrogen.The yield of treatment 4(7 500 kg/hm organic fertilizer + 150 kg/ hm nitrogen fertilizer) had raised 77％ , 46％ and 10％ , respectively, compared with that of treatment 1 (without fertilizer) , treatment 2(7 500 kg/hm2 organic fertilizer), and treatment 3(7 500 kg/hm2 organic fertilizer +75 kg/ hm2 nitrogen fertilizer).The nitrogen utilization efficiency became higher along with the nitrogenous fertilizer inputs increased.关键词
元阳梯田/水稻/不同氮肥用量/产量/氮素吸收量Key words
Yuanyang terrace/ rice/ exogenous active nitrogen/ yield/ nitrogen uptake分类
农业科技引用本文复制引用
陆旭,杨志新,续勇波,何霞红,朱有勇..不同氮肥用量对元阳梯田水稻产量及构成因素的影响[J].云南农业大学学报,2011,26(3):376-381,388,7.基金项目
云南省教育厅基金(08Y0183) （08Y0183）
云南省自然科学基金(2010ZC083) （2010ZC083）
中科院土壤与农业可持续发展国家重点实验室开放基金(0812000051) （0812000051）
国家"973"项目(2006CB100200) （2006CB100200）
公益性行业(农业)科研专项(200803030). （农业）
