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有机无机肥配施表明 ,土壤酶活性增强 ,土壤有机碳、易氧化碳、重组碳增加 ,土壤腐殖质品质和活性改善 ,原土复合量、阳离子交换量 ( CEC)、速效养分增加 ,结构改良 ,且具有显著的增产效果 ,坡梁栗钙土莜麦产量比对照提高 2 2 3 .6%～ 3 90 .3 % ,降水利用效率和作物水分利用效率分别提高 4 .4 1～ 8.2 3和 3 .50～6.66kg· mm- 1 · hm- 2 ;旱滩草甸栗钙土春小麦较对照增产 71 .5%～ 98.5% ,降水利用效率和作物水分利用效率分别提高 3 .67～ 5.0 5和 2 .71～ 3 .73 kg· mm- 1· hm- 2。本区由于热量不足 ,麦类作物光合潜力降低1 4 .9%～ 4 5.0 % ,降水不足使光温潜力降低 4 .3 %～ 56.0 %。有机无机肥配施使莜麦降水潜力开发度提高 2 4 .6～ 3 9.5个百分点 ,使春小麦降水潜力开发度提高 1 7.4～ 3 5.6个百分点
The combination of organic and inorganic fertilizers showed that soil enzyme activity increased, soil organic carbon, easily oxidizable carbon and recombinant carbon increased, soil humus quality and activity improved, soil original compound content, cation exchange capacity (CEC), available nutrient increased, structure improved, And had a significant yield increase effect. The yield of barley soil of chestnut soil increased by 22.36% -390.3% compared with the control, and the precipitation utilization efficiency and the crop water use efficiency increased by 4.41 ~ 8.23 and 3, respectively .50 ~ 6.66kg · mm-1 · hm-2. The dry grassland chestnut soil spring wheat increased by 71.5% -98.5% compared with the control, the precipitation utilization efficiency and the crop water use efficiency increased by 3.67-5.05 and 2 .71 ~ 3 .73 kg · mm-1 · hm-2. Due to the lack of heat in this area, photosynthetic potential of wheat crops decreased by 14.9% -4.0%. The lack of precipitation reduced the potential of light and temperature by 4.3% ~ 56.0%. The combination of organic and inorganic fertilizers increased the development potential of oatmeal precipitation potential by 24.6-3.5 percentage points, which increased the development potential of spring wheat precipitation by 1 7.4-3.5 percentage points