摘要
连续3年6季的研究表明,在地力相似,用肥用水量相同的条件下,采用免耕撒播法比采用常规耕作插秧法生产水稻,可使稻谷的产量提高1.4％～6.5％,降低生产成本23％～44％。产量较高的原因在于免耕法能导致水稻的穗粒性状优于常规耕作法,而这种优势的产生则与免耕法能改善土壤的基本物理性质,进而有利于提高根系及地上部的生理活性有关.
The study of six crops in three successive years showed that under the same conditions of soil productivity, fertilizer supply and water irrigation, the no-tillage method increased the yield of grain and reduced the production cost by 1. 4%-6. 5% and 23%-44% respectively as compared with the conventional tillage method. The reason for the higher yield lies in that the no-tillage method gave rise to better economic characters of rice than the conventional method. Yet, this advantage is associated with the improvement of the basic physical characters of the soil by the no-tillage method and the consequent improvement of the growth capacity and physiological activities of the root system and the above-ground part.
出处
《华南农业大学学报》
CAS
CSCD
1993年第2期10-17,共8页
Journal of South China Agricultural University
关键词
水稻
免耕
生理生态效应
No-tillage method in rice cultivation
Physiological and ecological effete
Improvement of labour productivity
Reduction of production cost
