【摘要】 传统的油—稻—稻三熟栽培模式,季节矛盾比较突出,除草剂等化学农药一年多次施用,不但增加生产成本,而且影响农产品质量,还污染环境。采用冬季油菜—双季稻免耕减氮节水栽培技术,既开发了冬季油菜生产,又解决了油菜收获后早稻免施除草剂抛秧的问题。同时节约了灌溉用水,节省了翻耕整地费用和时间,缓解了季节矛盾,改善了土壤团粒结构。增产稻谷76kg/667m2,增加油菜籽产量105.4 kg/667m2,增收节支808.6元/667m2。更多还原

【Abstract】 In traditional rape-rice-rice cultivation model,the seasonal conflict problem is serious;in addition,the chemical pesticide like herbicide will be applied many times per year,which will increase production cost,affect quality of agricultural products and pollute environment.Using non-tillage,nitrogen-reducing and water-saving cultivation techniques for winter rape-double season rice not only developing the production of winter rate,but also solve the problem that applying herbicide to early rice after rape harvest.Meanwhile,it saved irrigating water and cost and time of plough,relieved seasonal conflict and improved the soil aggregate structure.These cultivation techniques increased rice yield by 1 140 kg/hm2,rape seed yield by 1 581 kg/hm2 and reduced cost by 12 129 yuan/hm2.更多还原