摘要
在中科院盐亭紫色土农业生态试验站的多年观测结果表明 ,聚土免耕耕作制较横坡种植制减少土、水流失率 (年平均 )分别为 4 5 .6 %、38.7% ,较顺坡种植分别减少 6 3.2 %、5 2 .4 % ;在川中丘陵区的其它几个观测站 (仁寿、乐至、内江和简阳 )也表明聚土免耕耕作制能明显减少水土流失。在雨季的初期 (5月 )和中期 (7月 ) ,各耕作制的水土流失较突出 ,而聚土免耕法正好在此期表现出较好的削减水土流失的能力。通过标准值比较 ,聚土免耕、横坡种植、顺坡种植的P值分别为 0 .31、0 .5 1、1。
The data of averaged year basis observed at agriculture experimental station of CAS in Yanting, shown the tillage system of collecting soil to form ridge with no-tillage (SN) substantially reduced soil and water losses of 45.6% and 38.7%, 63.2% and 52.4% respectively, compared to contour tillage (CT) and straight tillage (ST) systems. The other experimental stations located at Renshou, Lezhi, Neijiang and Jianyang of central hilly area of Sichuan, as well as confirmed the SN significantly diminished the soi...
出处
《山地学报》
CSCD
2001年第S1期65-70,共6页
Mountain Research
基金
中科院成都山地所"种子基金"
中科院"百人计划"项目的部分内容。
