应用生态学报2017，Vol.28Issue(12)：3926-3934,9.DOI:10.13287/j.1001-9332.201712.025
冬小麦高产高效群体的年际间稳产性能
Stability of a winter wheat population with high yield and high resource use efficiency
摘要
Abstract
Using the winter wheat cultivar Tainong 18 as the experimental material,we analyzed yield stability from 2012 to 2016 under three different treatments:T1 (following typical local field management practices),T2 (high-yield:high nitrogen and water were supplied to foster high grain yield),and T3 (high-yield,high-efficiency:optimized field management including increasing plant density,reducing nitrogen input and delaying of the sowing date).Yield related phenotypic traits,including the number of ears on the main stem and tillers,leaf area index (LAI),photosynthetically active radiation (PAR) interception,dry matter accumulation and distribution,as well as grain yield,were analyzed over four seasons to determine their relationships with annual radiation,accumulated temperature and precipitation.We then determined grain yield stability for each of the three treatments.The amount and distribution of radiation,accumulated temperature,and precipitation varied greatly within each season.The ears on the main stem represented 38.9％,58.7％,and 66.9％ of the total ears,respectively,for wheat grown in the T1,T2 and T3 treatments,indicating that T1 ears originated mainly from the tillers,T2 ears from both the main stem and the tillers,and T3 ears from the main stem.The T2 and T1 treatments produced the highest and lowest amount of dry matter and grain yield,respectively.Although having relatively lower dry matter accumulation at maturity compared with T2,T3 led to higher grain yield due to high LAI,high PAR interception and utilization,high net canopy photosynthetic rate from booting (especially from 14 days after anthesis) to maturity and a higher harvest index.Among the three treatments,T3 resulted in the lowest annual range,standard deviation,and coefficient of variation for LAI,PAR interception,and dry matter accumulation.Thus,grain yield was most stable in wheat grown in the T3 treatment mainly due to stability in biological production during all four seasons.关键词
干物质/产量/光能利用/稳产Key words
dry matter/grain yield/PAR utilization/stable yield引用本文复制引用
马鑫,代兴龙,王晓婧,董述鑫,王月超,徐海成,朱元刚,贺明荣..冬小麦高产高效群体的年际间稳产性能[J].应用生态学报,2017,28(12):3926-3934,9.基金项目
本文由公益性行业(农业)科研专项(201203096)、国家重点基础研究发展计划项目(2015CB150404)和山东省高等学校科技计划项目(J15LF07)资助 This work was supported by the Special Fund for Agro-scientific Research in the Public Interest (201203096),the Chinese National Basic Research Program (2015CB150404) and Shandong Province Colleges Science and Technology Program (J15LF07). （农业）
