不同免耕方式对双季稻产量的影响

Effects of Different No-tillage Methods on Grain Yield of Double-cropping Rice

龙岩市农技站于2005—2007年在双季稻区连续3 a进行了不同免耕栽培方式试验。结果表明,晚季半年免耕早、晚稻产量与习惯有耕相比无显著差异,节本增收效果好,可作为水稻免耕的主要方式推广;全年免耕晚稻产量与习惯有耕相比产量显著减少,土壤容重显著增加,不适宜双季稻区推广。

Different no-tillage cultivation methods were studied in double-cropping rice areas at Shanghang county of Fujian province, China, in 2005-2007. The results showed that compared to conventional tillage, the grain yields of early and late rice by late season no-tillage half a year were no significant difference,but had better effects of reducing costs and increasing incomes. This main no-tillage method of rice should be demonstrated. Grain yield of late rice by annual no-tillage method was significantly lower than that of conventional tillage, but its bulk density of soil increased significantly, which was not suitable for the promotion in double cropping rice areas.