苗肥用量对稻茬直播油菜农艺性状和产量的影响  

Effect of seedling fertilizer application on agronomic traits and yield of direct seedling Brassica napus L.in paddy rice field

作　　者：吴美娟 黄洪明 汪暖 邵庭 蒋红旗 WU Meijuan;HUANG Hongming;WANG Nuan;SHAO Ting;JIANG Hongqi(Agricultural Technology Extension Center of Lanxi City,Lanxi 321100,Zhejiang;Chixi Sub-district Office of Lanxi Municipal People′s Government,Lanxi 321100,Zhejiang)

机构地区：[1]兰溪市农业技术推广中心,浙江兰溪321100 [2]兰溪市赤溪街道办事处,浙江兰溪321100

出　　处：《浙江农业科学》2025年第2期318-320,共3页Journal of Zhejiang Agricultural Sciences

基　　金：浙江省农业产业技术团队项目(2020—2021年)。

摘　　要：文章以浙油505为供试品种,研究增施苗肥对稻茬直播油菜农艺性状和产量的影响。结果表明,随着苗期氮肥用量的增加,生育期有不同程度的延迟,植株高度、单株一次分枝数相应增高,单株角果数随着苗肥用量增加呈先增后减的趋势,每角粒数差异不大,千粒重随着苗肥用量增加而增加。产量表现为先明显增加再基本平缓后降低的趋势,油菜籽含油量随着苗肥用量的增加呈下降趋势,以总纯氮量204.75 kg·hm^(-2)、苗肥施尿素(N 46%)225 kg·hm^(-2)的条件下,油菜产量、品质等方面最优。To study on the effects of seedling fertilizer application on the agronomic traits and yield of direct seedling Brassica napus L.in paddy rice field,this study used Zheyou 505 as test variety.The results showed that the growth period was delayed to varying degrees,the plant height and number of branches per plant increased accordingly with the increase of nitrogen fertilizer application during the seedling stage.The number of pods per plant showed a trend of first increasing and then decreasing with the increase of seedling fertilizer application,the difference in number of seeds per pod was not significant,and the weight of 1000 grains increased with the increase of seedling fertilizer application.The yield performance showed a significant increase followed by a basic plateau and then a decrease.The oil content of rapeseed decreased with the increase of seedling fertilizer application.The application rate using about 204.75 kg·hm^(-2) total nitrogen and 225 kg·hm^(-2) urea(N 46%)provided the best yield and quality of Brassica napus L..

关 键 词：苗肥 直播 油菜 性状 产量 

分 类 号：S636[农业科学—蔬菜学]