再生稻套播油菜共生期对油菜植株性状及产量影响  

Effects of Symbiotic Period on Plant Traits and Yield of Rapeseed Planted with Ratooning Rice

作　　者：吴艳[1] 肖国滨[1] 叶川[1] 李亚贞[1] 黄天宝[1] 刘小三[1] 肖小军[1] 吕伟生 陈明[1] 秦超[1] 郑伟[1,2] WU Yan XIAO Guobin YE Chuan LI Yazhen LV Weisheng CHEN Ming HUANG Tianbao LIU Xiaosan XIAO Xiaojun QIN Chao ZHENG Wei(National Engineering and Technology Research Center for Red Soil Improvement/Scientific Observational and Experimental Station of Arable Land Conservation in Jiangxi, Ministry of Agriculture, Jiangxi Institute of Red Soil, Jinxian 331717, China Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education~Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, College of Agronomy, Jiangxi Agricultural University, Nanchang 330045, China)

机构地区：[1]江西省红壤研究所国家红壤改良工程技术研究中心农业部江西耕地保育科学观测实验站,江西进贤331717 [2]江西农业大学农学院作物生理生态与遗传育种教育部重点实验室南方粮油作物协同创新中心,江西南昌330045

出　　处：《土壤与作物》2017年第3期174-179,共6页Soils and Crops

基　　金：江西省重大科技支撑计划项目(20143ACF60009);江西现代农业协同创新专项(JXXTCX2015003-005);江西省科研院所基础设施配套项目(20142BBA13036);国家公益性行业(农业)科研专项(201503123)

摘　　要：为研究共生期对再生稻套播油菜性状及产量影响,设置油稻共生期0(T1)、3 d(T2)、5 d(T3)、7 d(T4)和10 d(T5)共5个处理,结果表明:(1)油菜产量和共生期呈一元二次抛物线关系(y=-8.98x^2+93.817x+1 864.6,R^2=0.848),其中共生期为5 d时产量最高,达2 179.8 kg·hm^(-2);(2)油菜全苗期密度随着其与再生稻套播共生期的延长而不断增加,而蕾薹期、盛花期均表现为先增加后减少,苗体稳定后密度大小为T3>T2>T1>T4>T5;(3)共生期与一次有效分枝、分枝有效角果数、全株有效角果数、单株生物量和单株产量呈极显著正相关(p<0.01),与每角粒数和植株密度呈极显著负相关(p<0.01),与主花序有效角果数和千粒重相关不显著(p>0.05)。说明不同再生稻套播油菜共生期通过影响油菜植株密度、单株产量等相关指标进而影响油菜产量,因此适宜的共生期有利于油菜产量的构建。In order to study the effects of symbiotic period on plant traits and yield of rapeseed planted with ratooning rice,5 treatments of symbiotic period of ratooning rice and rapeseed were as designed separately：0（T1）,3d（T2）,5d（T3）,7d（T4） and 10d（T5）.The results showed that：（1） Rapeseed yield had a clear second-degree parabola relation（y =-8.98x^2＋ 93.817 x ＋1 864.6,R^2= 0.848） with symbiotic period,the maximum was 2 179.8 kg·hm^（-2） in T3 treatment.（2） With the prolonged symbiotic period of ratooning rice and rapeseed,the rapeseed density in seedling period continuously increased,but rapeseed density in bud period and blossom period reduced after the first increased.The density size of stable rapeseed was T3 T2 T1 T4 T5.（3） Symbiotic period was extremely correlated with the first effective branch number,effective pod number of main raceme,productive pod number of branch,productive pod number of plant,biomass per plant and yield per plant（p 0.01）,respectively,which was significantly negatively correlated with seed number per pod and plant density,while was not significantly associated with the 1000-grain weight and effective pods of main raceme.Different treatment of symbiotic period on rapeseed planted with ratooning rice influenced rapeseed yield by plant yield,yield per plant and other relevant indexes.Therefore,suitable symbiotic period was conducive to rapeseed yield formation.

关 键 词：共生期 再生稻套播油菜 植株性状 产量 

分 类 号：S565[农业科学—作物学]