不同生育时期施氮量调控对机采棉花冠层特性影响
Effects of Nitrogen Application Rate on Canopy Characteristics of Machine Harvesting Cotton under Drip Irrigation during Different Growth Stages
摘要
Abstract
[Objective] The project aims to improve the canopy structure and the yield and increase the quality of machine harvesting cotton by adjustin the strategy nitrogen application rate.[Method] Different amounts of nitrogen fertilizer were applied at different growth periods based on the same basic fertilizer.Canopy characteristics of cotton was monitored with the CI-110 canopy instrument.[Result] The amount of nitrogen regulation in bud stage,LAI index,MFIA index and T index were increased with the increase of amount of nitrogen fertilizer,TC index and K index decreased with the increase of amount of nitrogen fertilizer;In flowering period,LAI index and K index first increased and then decreased with the increase of application amount of nitrogen,MFIA index and T index decreased first and then increased with the amount of nitrogen increased,TC index increased first and then tended to be stable with the increase of the amount of nitrogen;In full boll stage,with the increase of nitrogen,LAI index increased first and then decreased,and the MFIA index increased with it.What was more,TC index increased first and then decreased,T index decreased first and then increased,K index increased first and then decreased.[Conclusion] At the full boll stage,nitrogen regulation has a good effect on regulating LAI index;The differences of MFIA index,K index and T index in the bud stage,flowering stage and full boll stage are not so great.The TC index value of bud stage treatment was higher than those of full flowering stage and full boll stage.关键词
机采棉/生育时期/施氮量/膜下滴灌/棉花冠层Key words
Machine harvesting cotton/growth stage/nitrogen application rate/drip irrigation under mulch/cotton canopy分类
农业科技引用本文复制引用
陈宝燕,马红红,牛新湘,马兴旺,杨涛,朱靖蓉..不同生育时期施氮量调控对机采棉花冠层特性影响[J].新疆农业科学,2017,54(11):1990-1998,9.基金项目
Special Program of Xinjiang Uygur Autonomous Region Key Research and Development Tasks "Integrated Management of Water and Cotton with Machine Picking Cotton and Its Product Development" (20161B01001-2-4) （20161B01001-2-4）
The Key Research and Development Program of National Natural Science Foundation of China "Southern Xinjiang Cotton Fertilizer and Pesticide Reduction Efficiency Technology Integration and Demonstration" (2017YFD0201903) （2017YFD0201903）
NSFC "The SPAD Diagnosis Model Establishment and Regulation in Yield by Leaf Pattern of Fertilization under Film Drip Irrigation" (41361067) （41361067）
自治区重点研发任务专项“机采棉水肥一体化管理技术与产品开发”(2016B01001-2-4) （2016B01001-2-4）
国家重点研发计划课题3“新疆南部棉区棉花化肥农药减施增效技术集成与示范”(2017YFD0201903) （2017YFD0201903）
国家自然科学基金项目“膜下滴灌棉化叶龄施肥SPAD诊断模式的建立及其对产量调控”(41361067) （41361067）
