中国生态农业学报2016，Vol.24Issue(11)：1482-1490,9.DOI:10.13930/j.cnki.cjea.160522
单粒精播对夏直播花生生育生理特性和产量的影响
Effect of single-seed sowing on growth, physiology and yield of summer peanut
摘要
Abstract
AbstractSummer-sowing peanut has developed rapidly with a planting model of peanut-wheat relay cropping.However, studies on individual development and population structure of summer-sowed peanut were inadequate. To supplement this deficiency, a field experiment was conducted in 2014 and 2015, to study the differences in plant development, leaf physiological characteristics and yield components between single-seed (SS) and double-seed (DS) sowed summer peanut. The previous crop was wheat, which was harvested on June 15. The peanut cultivar ‘HY22’ was sowed on ridges and mulched with plastic film on June 20. The ridge was 50 cm with a furrow spacing of 30 cm. Plant spacing was 10 cm for SS, 20 cm for DS, and the plant density was same for both treatments, 2.5 × 105plant·hm-2. The results showed that main stem height and lateral branch length of SS treatment were higher than those of DS treatment at the early growth stage, however they became lower than those of DS at the late growth stage. The numbers of both node and leaf in main stem, leaf area index and especially branch numbers of SS were all higher than those of DS during the whole growth period. The activities of SOD, POD and CAT, chlorophyll content and photosynthetic rate increased, while MDA content reduced at pod-filling stage and maturation stage in SS treatment. Although no significant differences was observed on above leaf physiological indexes between SS and DS treatments at pod-filling stage, but the differences was remarkable at maturity stage. Pod yield of SS increased significantly compared with DS treatment due to a significant increase in full pod number per plant. And it positively related to both pod weight per plant and photosynthetic rate. This implied that it was positively correlated with economic coefficients, leaf number per main stem, leaf area index and chlorophyll content.关键词
花生/夏直播/单粒精播/植株性状/生理特性/产量Key words
Peanut/Summer sowing/Single-seed sowing/Plant character/Physiological characteristics/Yield分类
农业科学引用本文复制引用
张佳蕾,郭峰,孟静静,杨莎,耿耘,王丽丽,张楠,李新国,万书波..单粒精播对夏直播花生生育生理特性和产量的影响[J].中国生态农业学报,2016,24(11):1482-1490,9.基金项目
国家自然科学基金项目(31571581,31571605)、国家科技支撑计划项目(2014BAD11B04)、现代农业产业技术体系建设专项资金项目(CARS-14)、山东省农业重大应用技术创新课题和山东省农业科学院青年科研基金项目(2015YQN12)资助* The study was supported by the National Natural Science Foundation of China (31571581,31571605), the National Key Technologies R&D Program of China (2014BAD11B04), the Special Fund for Modern Agro-industry Technology Research System (CARS-14), the Project of Significant Agricultural Technology Innovation in Shandong Province, and the Youth Scientific Research Foundation of Shandong Academy of Agricultural Sciences (2015YQN12) （31571581,31571605）
