‘浙油18’直播高产栽培机理的研究  

High yield cultivation mechanism of direct-seeding rapeseed(Brassica napus L.cv. Zheyou-18)

作　　者：邵美红 孙加焱 林宝刚[2] 张冬青[2] 

机构地区：[1]浙江省建德市种子管理站,浙江建德311600 [2]浙江省农业科学院作物与核技术利用研究所,浙江杭州310021

出　　处：《浙江农业学报》2011年第6期1069-1072,共4页Acta Agriculturae Zhejiangensis

基　　金：国家油菜产业技术体系(nycytx005);浙江省科技厅公益性技术应用研究项目(2008C22076)

摘　　要：利用正交试验设计,研究了直播栽培的播种期、密度和氮肥用量3个栽培因子对甘蓝型双低高油油菜‘浙油18’植株的主要经济性状和产量的影响。结果表明,播种期对‘浙油18’的株高、一次有效分枝数、单株有效角果数、每角果实粒数和千粒重有显著影响;种植密度对一次有效分枝数、单株有效角果数和每角果实粒数有显著影响;氮肥用量对有效分枝部位,三因子对其他经济性状影响不显著。根据极差和F测验,三因子对‘浙油18’产量影响依次为播种期>定植密度>氮肥用量。随着氮肥用量增加,产量先增后减,差异不显著。提早播种、适当增加密度,产量显著提高。Effects of three cultural factors including seeding time,plant density and application amount of nitrogen on main traits and yield of direct-seeding rapeseed Zheyou-18 were studied using orthogonal test.The results showed that seeding time significantly affected the height,the number of primary affective branches,the total pods per plant,the grains per pod and the kilo-grain weight.Plant density significantly affected the number of primary affective branches,the total pods per plant and the grains per pod.Meanwhile,the application amount of nitrogen only influenced the branch height,and these three cultural factors had no significant effect on the other traits.The order of the three effect factors on rapeseed yield was seeding timeplant densityapplication amount of nitrogen based on the range of means and F test.The yield of Zheyou-18 increased at first and reduced later with the increasing application of nitrogen,but showed no significant difference.The yield markedly increased with appropriate earlier seeding time and higher plant density.

关 键 词：油菜 浙油18 直播栽培 播种期 密度 氮肥用量 

分 类 号：S565.4[农业科学—作物学]