不同作物种植方式产出效果的定量评价

 应用土地当量比、产量当量、产值当量等不同量化指标，对复种、间作、轮作等不同种植方式的产出效果进行了比较研究。结果表明，与单作一熟农田相比，复种、间作及轮作农田土地利用效率分别提高62%、38%和21%；单位面积产量分别为单作一熟农田的1.63、1.29和1.16倍；复种、间作农田单位面积产值分别为单作一熟农田的1.76和1.35倍。通过综合分析，进一步明确了评价不同种植方式产出效果的客观方法，为今后农作制度中不同种植方式农田产出效果的比较研究提供理论依据。

Quantitative Evaluation of Output Efficiency in Different Cropping Patterns

The concept related to yield equivalent and value of output equivalent is proposed. Using various quantitative standards such as land equivalent ratio, yield equivalent, and value of output equivalent, the efficiency of various cropping patterns such as sequential cropping, row cropping, crop rotation was studied. The result showed, comparing with sole cropping, the land use efficiency of sequential cropping, row cropping, crop rotation raised by 62%, 38% and 21%. The unit area yield of sequential cropping, row cropping, crop rotation was 1.63, 1.29 and 1.16 times of sole cropping. The unit area value of double cropping, row cropping was 1.76 and 1.35 times of sole cropping. Through comprehensive analysis, the objective methods for comparison of farm output efficiency are cleared. The paper has provided a theoretical basis for comparison study output efficiency of various cropping patterns in future.