深松耕作对土壤水分物理特性及作物生长的影响

Effect of Deep Loosen Cultivation to Soil Moisture Physical Characteristics and Crop Growing

通过对两种土壤深松耕作及传统耕作的对比试验研究，表明深松耕作可有效打破犁底层，使土壤容重降低0．1t／m3，孔隙度增大3．6％～4．0％，110cm上体内可多蓄纳雨水15．2～17．5mm。对粘壤上深松耕作可提高土壤的入渗能力，而对粉砂壤土则没有提高。同传统耕作相比，深松耕作可明显提高夏玉米的根长、根深及根量，为有效利用土壤水分及养分创造了条件．可使夏玉米产量提高5．7％～11．3％。

The deep loosen cultivation may effectively break the plough sole and lower the soil unit weight by 0. 1 t/m3 and enlarge porosity by 3. 6%-4. 0% and store more rainfall water by 15. 2-17. 5 mm in the 110 cm soil body through experimental comparison study of two kind of soil deep loosen and traditional cultivations. The infiltration capacity of clay loam can be enhanced by deep loosen. However, the Infiltration capacity of sandy loam cannot be enhanced by deep loosen. By comparison with the traditional cultivation, the deep loosen cultivation can obviously increase the roots lenth, depth and numbers of summer corn and create a good condition for effectively using soil moisture and nutrient and Increase the summer corn yield by 5. 7% -11. 3%.