摘要
通过对沿黄稻麦区稻作期间 57块典型田块的土壤渗漏速率测定 ,表明 59.6%的田块的土壤渗漏速率在 2 0～ 30mm/d ,约 30 %的田块渗漏速率过大 ,1 0 .5%的田块则因有障碍层而使土壤渗漏率过小。调查发现 ,施肥状况与土壤透水性有较密切关系 ,长期施用有机肥对土壤透水性能有改善效果。采用日产深松机深松 1～ 4次能有效打破 0～ 45cm土层内的紧实层或障碍层 ,减轻土壤紧实度 ,提高土壤渗漏速率。其中以深松 1次处理的产量最高 。
The water permeability of 57 representative paddy soils in the rice and wheat rotation area along the yellow river was measured during the period of rice growth. The results indicated that the percolation rate of 59.6 percent of measured soils was 20～30 mm/d.30% of that was above 30 mm/d and 10.5% was below 20 mm/d due to the compact layer exsited in the soil profile.There was close relation between the soil permeability and fertilization.Long term usage of organic fertilizer could effectively improve the soil permeability.By the deep digging machine,the compact layer or obstacle horizon in the soil profile could be broken so that the soil compactness was decreased and the percolation rate was raised.Deep digging 1 time was economical and effective measurement on improvement of soil permeability.
出处
《河南农业科学》
CSCD
2000年第5期22-25,共4页
Journal of Henan Agricultural Sciences
关键词
水稻土
土壤透水性
施肥
深松
土壤渗漏速率
Rice growing area along the Yellow River Soil permeability Fertilization Deep digging Soil compactness
