摘要
2007～2010年,在东北黑土稻作区,探索不同免耕措施对稻田土壤理化性质及水稻产量的影响。结果表明,全年免耕和免耕轻耙土壤容重分别增加19.0%和9.5%,土壤总孔隙度分别降低8.5%和4.2%;分别使土壤0～10 cm表层有机质含量增加50.3%和53.8%,使10～20 cm土层有机质含量降低42.5%和33.9%,土壤其他养分也表现出相同的趋势;全年免耕比常规翻耕单位面积产量降低3.6%,免耕轻耙单位面积产量则变化不大。说明免耕轻耙对土壤理化性质和产量的影响比全年免耕小,可作为水稻免耕的主要方式在东北黑土稻区推广。
The effect of different no-tillage ways on the soil property and rice yield were investigated in a clay loam soil during 2007-2010.The results showed that annual no-tillage and no-tillage soil bulk density were increased by 19.0% and 9.5%,soil total porosity were reduced by 8.5% and 4.2%,soil organic matter content were increased by 50.3% and 53.8% in 0~10 cm surface soil.Soil organic matter content were reduced by 42.5% and 33.9% in 10~20 cm surface soil,other soil nutrient also showed the same trend.Annual no-tillage mu produce reduced 3.6% than traditional tillage,but no-tillage and light harrowing yield changed little.The results indicated that the soil property and rice yield were much less affected by no-tillage and light harrowing than that of annual no-tillage,this way can be widespread in a clay loam soil.
出处
《北方水稻》
CAS
2011年第5期11-13,20,共4页
North Rice
关键词
黑土
水稻
免耕
免耕轻耙
Clay loam soil
Rice
No-tillage
No-tillage and light harrowing
