稻油复种免耕条件下杂交油菜干物质积累量和产量形成特性研究  

Study on Characteristics of Dry Matter Accumulation and Yield Formation of Hybrid Rape Under the Condition of Rice-oilseed Rape Multiple Cropping and Zero Tillage

作　　者：田晋文[1] 冯跃华[1] 潘兴书[1] 范乐乐[1] 潘剑[1] 宋碧[1] 

机构地区：[1]贵州大学农学院,贵州贵阳550025

出　　处：《贵州农业科学》2010年第6期32-35,38,共5页Guizhou Agricultural Sciences

基　　金：贵州省科学技术基金项目[黔科合J字(2007)2069];贵州大学人才引进科研基金项目"水稻-油菜复种双免耕优质高产栽培技术研究"

摘　　要：为杂交油菜免耕移栽种植方式的推广提供一定的理论基础和实践依据,以杂交油菜贵杂5号为材料,在稻油复种免耕条件下研究了杂交油菜的干物质积累量和产量形成特性。结果表明,在苗期和角果发育成熟期,免耕移栽油菜的干物质积累量比翻耕移栽分别高28.25%和29.42%,且在角果发育成熟期达5%的显著水平。在现蕾期,油菜免耕移栽的叶面积指数比翻耕移栽高41.18%。免耕移栽油菜的产量为2 290.18 kg/hm2,比翻耕移栽略低,但差异未达显著水平;免耕移栽油菜的每角粒数比翻耕移栽油菜低,但其单株有效角果数、千粒重均比翻耕移栽高,同时影响产量高低的主要因素是单株有效角果数,其次是每角粒数。油菜的干物质积累量与产量在终花期呈显著正相关。油菜免耕移栽的净产值为2 744元/hm2,比翻耕移栽高42.99%。The characteristics of dry matter accumulation and yield formation of Guiza 5（a hybrid rape variety） were studied under the condition of rice-rape multiple cropping and zero tillage to provide the theoretical and practical basis for popularization of zero tillage with transplanting pattern in hybrid rape.The results showed that the dry matter accumulation of Guiza 5 under the zero tillage with transplanting pattern at seedling and pod development maturity stage were 28.25% and 29.42% higher than that under tillage with transplanting pattern respectively,there was 5% significant difference in dry matter accumulation between the zero tillage with transplanting pattern and tillage with transplanting pattern,the leaf area index under the zero tillage with transplanting pattern was 41.18% higher than that under the tillage with transplanting pattern at budding stage,the yield under the zero tillage with transplanting pattern was slightly lower than that under the tillage with transplanting pattern but there was no significant difference between the zero tillage with transplanting pattern and the tillage with transplanting pattern.The grains per pod under the zero tillage with transplanting pattern was lower than that under the tillage with transplanting pattern but its effective pods per plant and 1000-grain weight were higher than those under the tillage with transplanting pattern.The main factors affecting yield were effective pods per plant and grains per pod.There was significant positive correlation at flowering end stage between dry matter accumulation and yield.The net output value under the zero tillage with transplanting pattern was up to 2744.00 Yuan/hm2,42.99% higher than that under the tillage with transplanting pattern.

关 键 词：复种 免耕 杂交油菜 干物质生产 产量 

分 类 号：S565.106.2[农业科学—作物学]