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为了客观地评价西北沿黄灌区不同作物间套作大豆的产出效果,进一步补充完善各栽培模式,应用土地当量比、产量当量、产值当量等不同量化指标对该区早熟马铃薯套作大豆、玉米间作大豆、小麦套作大豆、亚麻套作大豆及豌豆套作大豆的种植模式进行了分析,同时对5种模式的经济效益进行了评价。结果表明:与单作农田相比,早熟马铃薯套作大豆、玉米间作大豆、小麦套作大豆、亚麻套作大豆及豌豆套作大豆的种植模式土地利用效率分别提高了54%、34%、52%、52%、66%,单位面积产量分别为单作农田的1.39,1.28,1.48,1.55,1.64倍,单位面积产值分别为单作农田的1.43,1.31,1.54,1.53,1.69倍。从盈利看,依次为早熟马铃薯套作大豆、玉米套作大豆、豌豆套作大豆、小麦套作大豆及亚麻套作大豆模式,分别为20 033.48,11 786.85,11 312.02,9 941.03,9 748.05元·hm-2。
In order to objectively evaluate the yield of interplanting soybean among different crops along the Yellow River Irrigation District in the northwest of China, further supplement and perfect each cultivation mode, applying different quantitative indexes such as land equivalent ratio, yield equivalent and output equivalent, Intercropping soybean, wheat intercropping soybean, linen intercropping soybean and pea intercropping soybean were analyzed. At the same time, the economic benefits of the five modes were evaluated. The results showed that the land use efficiency of early maturing potato intercropping soybean, intercropped soybean intercropping soybean, wheat intercropped soybean, linen intercropping soybean and pea intercropping soybean increased by 54%, 34%, 52% %, 52% and 66% respectively. The yield per unit area was 1.39,1.28,1.48,1.55 and 1.64 times of that for monoculture, respectively. The output value per unit area was 1.43,1.31,1.54,1.53,1.69 times of that of monoculture. From the profit perspective, followed by early-maturing potato sets for soybeans, corn sets for soybeans, peas for soybeans, wheat sets of soybeans and linen for soybeans, respectively, 20 033.48,11886.85,11312.92 9,941.03,9 748.05 yuan · Hm-2.