南方农业学报2017，Vol.48Issue(3)：416-421,6.DOI:10.3969/j:issn.2095-1191.2017.03.006
种植密度和施肥量对南麦618农艺性状、叶绿素含量及产量的影响
Effects of planting density and fertilizer application rate on agronomic traits, chlorophyll content, leaf area and yield of wheat Nanmai 618
摘要
Abstract
[Objective]The present study explored the optimal planting density and fertilizer application rate for wheat Nanmai 618 in northeast hilly area of Sichuan province,in order to provide reference for formulation of high-yield and high-efficiency cultivation techniques. [Method]The experiment was conducted by using a randomized complete block design with two factors and three levels. Three levels of planting density were: 2.18×106 plant/ha(A1),2.48×106 plant/ha(A2), 2.78×106 plants/ha(A3),three levels of fertilizer application rate were: N 33.0 kg/ha+P 25.7 kg/ha(B1),N 66.0 kg/ha+P 51.3 kg/ha(B2),N 99.0 kg/ha+P 77.0 kg/ha(B3). Related agronomic traits,flag leaf chlorophyll content,leaf area per stem were measured during growing period. Yield of each block was measured seperately at harvest period. [Result]As planting density increased,effective spike per unit area increased,spike rate declined, grain number per spike and 1000 -grain weight decreased to different extent,spike length shortened,yield and harvest index rose, flag leaf chlorophyll content de-creased and leaf area per stem shrank. When fertilization application rate rose, effective spike per unit area increased, spike rate declined, grain number per spike and 1000-grain weight increased to different extent,spike length lengthened, yield and harvest index rose, flag leaf chlorophyll content and leaf area per stem increased. The interaction between plan-ting density and fertilizer application rate had significant effects on effective spike and yield(P<0.01),and effective spike had significant correlation with yield(P<0.05). Based on comprehensive analysis, wheat Nanmai 618 in A2B3 treatment had optimal agronomic traits and photosynthetic properties, and highest yield(5.49×103 kg/ha). [Conclusion]Under the experimental conditions in this study,fertilizer application rate of N 99.0 kg/ha+P 77.0 kg/ha and planting density of 2.48× 106 plants/ha is recommended for cultivation of wheat Nanmai 618 in northeast hilly areas of Sichuan.关键词
种植密度/施肥量/南麦618/农艺性状/叶绿素含量/叶面积/产量Key words
planting density/fertilizer application rate/Nanmai 618/agronomic trait/chlorophyll content/leaf area/yield分类
农业科技引用本文复制引用
蒋进,王淑荣,张连全,冯晓,左娟,刘利..种植密度和施肥量对南麦618农艺性状、叶绿素含量及产量的影响[J].南方农业学报,2017,48(3):416-421,6.基金项目
国家现代农业产业技术体系建设专项项目(CARS-03) （CARS-03）
四川省南充市科技计划项目(14A0115) （14A0115）
