摘要
2000-2001年通过田间试验进行了坡耕地玉米水土保持耕作措施研究。结果表明:不同处理的水土保持效果为等高双垄盖膜盖草(B)处理>等高双垄盖膜(A)处理>等高传统打塘盖膜(C)处理>裸地顺坡种植(D对照);前3个处理径流量两两差异显著(P<0.05),且B处理的径流量极显著地少于C处理(P<0.01);土壤侵蚀量B处理显著少于C处理(P<0.05)。双垄覆盖种植的水土保持效果随着坡度的增加和降雨强度的增加,土壤侵蚀的加剧而更加明显;B处理的玉米产量始终高于其它处理,2001年该处理的产量达14.01t/hm2,显著高于C处理。说明坡耕地玉米双垄盖膜盖草种植能有效减轻水土流失、促进玉米生长发育,是一项有利于农业可持续发展的保护性耕作措施。
In 2000 and 2001, a plot trial was conducted to study the effect of double ridge and surface mulch cultivation on soil erosion and maize yield. Results show that the order of water and soil conservation effect among the treatments is contour planting + double ridge + straw and polythene mulch (treatment B) > contour planting + double ridges + polythene mulch (treatment A) > contour planting + single ridge + polythene mulch (treatment C ) > down slope planting without mulch (treatment D) . The runoff is significant different (P < 0.05) between A and C, B and C, A and B and the runoff from B is very significant less than C (P < 0.01) . Comparison of sediment, B is significant less than C (P < 0.05) . The effect of controlling soil erosion from the treatment of contour planting + double ridge + surface mulch is increasing with the increasing of slope angle, rain intensity and erosion rate. Treatment B also produced the highest maize yield always. The maize yield of treatment B is 14.01 t/hm2 in 2001 and it is significant higher than treatment C. Therefore, the practice of contour planting + double ridge + straw and polythene mulch can control soil erosion effectively, improve maize development and is one of the sustainable, conservation practices.
出处
《西南农业学报》
CSCD
2004年第B05期94-100,共7页
Southwest China Journal of Agricultural Sciences
基金
云南省科技厅国际合作处
欧盟资助项目
关键词
坡耕地
玉米
地表覆盖
水土保持
保护性耕作
sloping arable land
maize
double ridge cultivation
surface mulch
soil and water conservation
