干旱地区农业研究2017，Vol.35Issue(4)：129-136,8.DOI:10.7606/j.issn.1000-7601.2017.04.20
非充分滴灌下施氮量对棉花生长特性、产量及水氮利用率的影响
Effects of different nitrogen fertilizer levels on growth, yield, water and nitrogen use efficiency of cotton under non-sufficient drip irrigation
摘要
Abstract
The optimal amount of nitrogen fertilizer oncotton was investigated under the condition of non-sufficient drip irrigation to provide scientific basis for highly efficient use of water and fertilizer of cotton in arid regions.Xinluzhong 54 was used as test material in split plot experiment design,the total drip-irrigation amount of 2 800 m3·hm-2(non full irrigation) and 3 800 m3·hm-2(conventional drip irrigation) for the main plot,four nitrogen (N) level,N0 (0 kg· hin-2),N1 (150 kg·hm-2),N2 (300 kg·hm-2),N3 (450 kg·hm-2) for sub-plot.Results showed that with the same irrigation amount,the growth process prolonged significantly with the increase in nitrogen fertilization.The plant height,the number of main leaf and fruit spur increased with the increase in nitrogen fertilization.The fourth from top leaf width,and effective fruit spur number first increased and then decreased with the increase in nitrogen fertilization.With the same nitrogen fertilization,plant height increased,and the number of main leaf,the fourth from top leaf width,stem diameter slightly decreased with the increase indrip irrigation.The number of bud and boll,the accumulation amount of dry matter,time of duration and the maximum rate of accumulation of dry matter first increased and then decreased with the increase in nitrogen fertilization,which was more significantin N2,and the growth characteristic value was more coordinated in N2.The difference in single boll weight and lint yield between the two irrigation quantity was not significant,but single boll weight and lint yield first increased and then decreased with the increase in nitrogen fertilization.Those in N2 wasthe highest,39.9％,20.1％ and 4.3 ％ higher than N0,N1,N3 respectively in average yield.Compared with N1 and N3,the water use efficiency increased by 40.97％,19.02％ and 4.88％ respectively.The nitrogen utilization efficiency increased by 53.91％ and 21.36％ respectively compared with N1 and N3.Therefore,in the Nanjiang Akesu area,drip irrigation of 2 800 m3· hm-2,and 300 kg· hm-2 nitrogen fertilization was the optimal condition for cotton.关键词
棉花/氮肥/滴灌/生长特性/产量Key words
cotton/nitrogen fertilizer/irrigation amount/growth characteristics/yield分类
农业科技引用本文复制引用
石洪亮,张巨松,严青青,田立文,崔建平,林涛,郭仁松..非充分滴灌下施氮量对棉花生长特性、产量及水氮利用率的影响[J].干旱地区农业研究,2017,35(4):129-136,8.基金项目
国家“十二五”科技支撑计划项目“棉花高产高效关键技术研究与示范”(2014BAD11B02) （2014BAD11B02）
新疆农业大学产学研联合培养研究生项目(xjaucxy-yjs-20151010) （xjaucxy-yjs-20151010）
