湖北省棉花氮肥效应研究  

Study on Effect of Nitrogen Fertilizer of Cotton in Hubei Province

作　　者：李银水[1,2] 鲁剑巍[1] 李小坤[1] 鲁明星 徐维明 李彬 张耀学 刘光文 

机构地区：[1]华中农业大学资源与环境学院,武汉430070 [2]中国农业科学院油料作物研究所,武汉430062 [3]湖北省土壤肥料工作站,武汉430070 [4]湖北省沙洋县土壤肥料工作站,湖北沙洋448200 [5]湖北省荆州区土壤肥料工作站,湖北荆州434000 [6]湖北省黄梅县土壤肥料工作站,湖北黄梅436500 [7]湖北省武穴市土壤肥料工作站,湖北武穴436300

出　　处：《湖北农业科学》2010年第1期52-55,共4页Hubei Agricultural Sciences

基　　金：国家"十一五"科技支撑计划重点项目(2008BADA4B08);教育部"新世纪优秀人才支持计划"项目(NECT-07-0345);国家测土配方施肥项目

摘　　要：通过17个大田试验,研究了湖北省棉花氮肥施用效果及氮肥最佳用量。结果表明,适量施用氮肥棉花增产增收效果显著,施氮比对照子棉增产131～1 244 kg/hm2,平均增产752 kg/hm2,平均增产率为31.1%。施氮纯利润平均为3 422元/hm2,产投比平均为4.07。氮肥偏生产力和农学利用率平均分别为13.20 kg/kg(N)和2.90 kg/kg(N)。根据线性加平台模型,求得湖北省棉花氮肥最佳用量平均为纯N114.0 kg/hm2。A study was undertaken to evaluate the effect of nitrogen （N） fertilization on yield, economic benefit, N use efficiency and optimum N recommendation rate of cotton through field trials at 17 sites in Hubei province. The results showed that the yield and profit of cotton significantly increased when N supplied adequately. Compared with the treatment without N fertilizer, the increment of seed-cotton ranged from 131 kg/hm^2 to 1 244 kg/hm^2, the average increment was 752 kg/hm^2 and increased by 31.1 percent compared with the control. The average net profit of the N application was 3 422 Yuan/hm^2 and the value cost ratio （VCR） was 4.07. The average partial factor productivity of applied N （PFPN） and agronomic N use efficiency （ANUE） were 13.20 kg/kg（N）and 2.90 kg/kg（N）, respectively. According to linear plus platform model, the average optimum N application rate was 114.0 kg（N）/hm^2 in Hubei province.

关 键 词：棉花 氮肥 产量 经济效益 氮肥最佳用量 

分 类 号：S562.062[农业科学—作物学]