水稻少耕及其生理生态特性研究进展  

PROGRESS OF THE RESEARCH ON THE REDUCED-TILLAGE BROADCAST SOWING TECHNIQUE IN RICE CULTIVATION AND ITS PHYSIOLOGICAL AND ECOLOGICAL CHARACTERS

作　　者：侯任昭[1] 关日强[1] 陈友荣[1] 邓巨添 李森发 江照贤 

机构地区：[1]广州华南农业大学农业生物系,南海市里水镇农业技术推广站

出　　处：《华南农业大学学报》1994年第1期109-114,共6页Journal of South China Agricultural University

摘　　要：本研究已探索到，连续１０年２０季在只耙不犁的少耕田撒播水稻与在按传统方法犁耙的全耕田撒播水稻相比，每季的稻谷产量都较高。其原因是少耕撒播稻（以下称少耕稻）的穗粒性状优于全耕撒播稻（以下称全耕稻），而这种优势的产生则在于少耕法能导致耕作层土壤的物理性质和养分，向着有利于根系生长的方向发展，而使少耕稻与全耕稻相比具有较发达与生理活性较强的根系，并进而导致少耕稻在稻苗的长势长相、功能叶的生理活性，以及在延缓功能叶的衰老等方面都优于全耕稻。The research on 20 crops of rice in successive 10 years proved that every crop ofrice cultivated with the reduced-tillage broadcast sowing technique with no ploughing butjust harrowing enjoyed a 4.2%～15.4%higher yield as compared with that cultivated withthe fulltillage broadcast sowing technique.The yield increase was due to better panicle andgrain traits ,which were associated with the improvement of the nutrient and physical char-acters of the soil in the tillage layer and the consequent promotion of the development of theroot system.Therefore,compared with the rice cultivated with fulltillage broadcast sowingtechnique,the rice cultivated with reducedtillage broadcast sowing technique had a root sys-tem which was more thriving and higher in physiological activity ,which consequently led toa better growth pattern,higher physiological activity of the functional leaves and delayed leaf senescence.

关 键 词：少耕 全耕 撒播 生理生态特性 水稻 

分 类 号：S511.101[农业科学—作物学]