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

作　　者：陆旭[1] 杨志新[1] 续勇波[2] 何霞红[3] 朱有勇[3] 

机构地区：[1]云南农业大学资源与环境学院,云南昆明650201 [2]云南农业大学烟草学院,云南昆明650201 [3]云南农业大学,农业生物多样性应用技术国家工程研究中心,云南昆明650201

出　　处：《云南农业大学学报（自然科学版）》2011年第3期376-381,388,共7页Journal of Yunnan Agricultural University:Natural Science

基　　金：云南省教育厅基金(08Y0183);云南省自然科学基金(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);国家“973”项目(2006CB100200);公益性行业(农业)科研专项(200803030)

摘　　要：为研究元阳传统栽培品种和外来引入新品种对不同氮肥用量的响应,在不同的氮肥处理下,对元阳地区月亮谷(传统品种)和楚粳26号(新品种)的氮素吸收量、水稻稻瘟病病情指数及产量构成因素进行了分析研究。结果表明,随着氮肥投入量的增加造成月亮谷减产,并引发了稻瘟病,氮素的吸收、利用效率随氮肥投入量的增加而下降,处理2(7 500 kg/hm2有机肥)产量最高,分别比处理1(不施肥)、处理3(7 500 kg/hm2有机肥+75 kg/hm2氮肥)、处理4(7 500 kg/hm2有机肥+150 kg/hm2氮肥)增产14%,10%,11%。而对于楚粳26号,氮素用量最高的处理4(7 500 kg/hm2有机肥+150 kg/hm2氮肥)相比处理1(不施肥)、处理2(7 500 kg/hm2有机肥)、处理3(7 500 kg/hm2有机肥+75 kg/hm2氮肥)分别增产77%,46%,10%,氮素利用效率随氮肥投入量的增加呈上升状态。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 active nitrogen. The yield of treatment 4 （ 7 500 kg/hm2 organic fertilizer ＋ 150 kg/hm2 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 

分 类 号：S143.1[农业科学—肥料学]