通过对土壤容重、土壤总孔隙度、土壤含水量、土壤田间持水量及玉米产量的测定和分析，研究一次性施肥条件下深松-旋耕、深松-免耕、常规旋耕和免耕不同耕作方式对土壤物理性状及玉米产量的影响。结果表明，不同耕作方式对土壤容重和土壤含水量的影响效果为深松-旋耕>深松-免耕>常规旋耕>免耕，深松-旋耕和深松-免耕的0-45cm土层土壤容重比常规旋耕分别降低了1.81%和1.32%，免耕增加了1.64%，土壤含水量分别提升了4.05%和2.91%，免耕降低了1.66%；对土壤总孔隙度的影响效果为深松-免耕>免耕>深松-旋耕>常规旋耕，0-45cm土层分别比常规旋耕增加了2.94%、2.74%和1.61%；对土壤持水量的影响效果为深松-免耕>常规旋耕>深松-旋耕>免耕，深松-免耕增加了0.53%，深松-旋耕和免耕分别降低了0.35%和3.73%；对玉米产量的影响大小依次为深松-免耕>免耕>常规旋耕>深松-旋耕，深松-免耕和免耕分别与深松旋耕和常规旋耕的产量差异达到了极显著水平，深松-免耕较常规旋耕增产15.68%，产量最高达到了6829.73 kg/hm2。
英文摘要:
By the mensuration and analysis of soil bulk density, soil total porosity, soil moisture content, soil moisture capacity and maize yield, the effects of subsoiling and rotary tilling, subsoiling and no-tillage,conventional rotary tillage and no- tillage on soil physical characters and maize yield through field experiments in a single fertilization were researched. The results showed that the effects of tillage methods on the soil bulk density and soil moisture contentweredifferences,with the order of subsoiling and rotary tilling, subsoiling and no-tillage, conventional rotary tillage and no-tillage. Compared with conventional rotary tillage, the soil bulk density (0-45cm) decreased 1.81%, 1.32%, and -1.64% respectively. The soil moisture content increased 4.05%, 2.91% and -1.66% respectively. And the effects of tillage methods on the soil total porositywere differences, with the order of subsoiling and no-tillage, no-tillage, subsoiling and rotary tilling and conventional rotary tillage. The soil total porosity of other tillage methods increased respectively2.94%、2.74%and 1.61%than conventional rotary tillage in 0-45cm soil depth. Then the effects of tillage methods on the soil moisture capacity were differences, with the order of subsoiling and no-tillage, conventional rotary tillage, subsoiling and rotary tilling and no-tillage. The soil moisture capacity of other tillage methods increased respectively0.53%、0.35%and 3.73% than conventional rotary tillage in 0-45cm soil depth.Finally the tillage managements have a great effect on maize yield, with order of subsoiling and no-tillage,no-tillage,conventionalrotary tillage, subsoiling androtary tilling.There were a significant difference between subsoiling and no-tillage, no-tillage and conventional rotary tillage,subsoiling and rotary tilling. The production of subsoiling and no-tillage, increased 15.68% than conventional rotary tillage, achieved 6829.73 kilograms per hectare.
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