作物研究2017，Vol.31Issue(4)：337-341,5.DOI:10.16848/j.cnki.issn.1001-5280.2017.04.01
长沙地区稻稻油三熟制机插双季稻适宜播期初探
Study on Suitable Sowing Date of Machine-transplanted Seedling of Double-season Rice under Rice-rice-oilseed Rape Triple-cropping System in Changsha
摘要
Abstract
To optimize the suitable sowing date of machine-transplanted seedling in the double-season rice under the rice-rice-oilseed rape triple-cropping system can provide technical support for popularizing of the mechanized transplanting techniques in triple-cropping system.In this paper,eight early and late rice varieties were used to study the differences in yield,growth period,DMA (dry matter accumulation),redundant growth and RUE (radiation use efficiency) under different sowing date.The results were shown as follows:the growth duration of early rice was shortened and that of late rice was extended as the sowing date delayed;moreover,DMA was increased first and then decreased.In additional,redundancy was increased and RUE was decreased with the sowing date delayed.Rice yield was increased first and then decreased with the sowing date delayed,and its possible reason was the seed setting rate affected by decrease of utilization rate of dry matter after the full-heading stage.Therefore,the sowing date of machine-transplanted seedling in the early rice could be postponed until 7th April-12th April,and that of late rice could be postponed till 5th July,which was relieved the seasonal contradictions between double season rice and oilseed rape season,and also to ensure stable and high yield.关键词
双季稻/播种期/机插秧/三熟制Key words
double cropping rice/sowing date/machine transplanting/triple-cropping system分类
农业科技引用本文复制引用
李波,郑华斌,王晓敏,陈其敏,张炎胜,唐启源..长沙地区稻稻油三熟制机插双季稻适宜播期初探[J].作物研究,2017,31(4):337-341,5.基金项目
“十二五”农村领域国家科技计划(2014AA10A605-3) （2014AA10A605-3）
国家水稻产业体系(CARS-01-30). （CARS-01-30）
