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麦收时小麦不同的留茬高度对下季玉米产量以及土壤养分状况有较大影响。试验设拔麦区 ;低留茬 5cm灭茬区 ;高留茬 2 0cm不灭茬区 ;高留茬 2 0cm灭茬区 ;低留茬灭茬并亩压麦糠 2 0 0kg区 5个处理。结果低留茬灭茬压糠区均较其它处理增产 ,且土壤含水量最高 ,杂草数最少 ,有益生物蚯蚓多 ;其次是高留茬灭茬区 ;再次是低留茬灭茬区。它们分别较拔麦区增产 1 2 85.5kg/hm2 、762kg/hm2 、537kg/hm2 。而高留茬不灭茬区产量低落 ,较拔麦区减产 4 1 1kg/hm2 。
Wheat stubble harvest wheat different height during the next season corn yield and soil nutrient status have a greater impact. Experiment set up the wheat area; low stubble 5cm stubble area; high stubble 20cm non-stubble area; high stubble 20cm stubble area; low stubble stubble and mu pressed 500kg area 5 treatment. Results Low-stubble stubble crushing zone increased yield compared with other treatments, and the highest soil moisture, the weeds the least number of useful bio-earthworms and more; followed by high stubble stubble area; again low stubble stubble area. They increased yields by 1 285.5 kg / hm2, 762 kg / hm2 and 537 kg / hm2, respectively. However, the yield of high-stubble non-stubble cropland was lower than that of the unpolluted crop area, with a decrease of 4 1 1kg / hm2.