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对果蔗田不同种植方式的光能利用率及经济效益进行比较研究,结果表明:(1)果蔗间作番茄和黄瓜,其光能利用率达1.7705%和2.8391%,较果蔗单作分别提高48.5 7%和138.24%;每公顷纯收入分别增加2476.35元和699.00元。(2)间作的生物产量与经济产量都显著高于单作;前者的土地当量值(LER)均超过2,显示了间作有提高农田生产力和增产的效果。还测定了不同种植方式对土壤部分化学特性的影响。
The results showed that: (1) For the intercropping tomato and cucumber, the light energy utilization rate was 1.7705% and 2.8391%, respectively, compared with the single sugarcane Increase by 48.5 7% and 138.24%; net income per hectare increased by 2,476.35 yuan and 699.00 yuan respectively. (2) Intercropping biomass yield and economic yield were significantly higher than single cropping; the former land-value equivalent (LER) of more than 2, showed intercropping to improve farm productivity and yield. The effects of different planting methods on soil chemical properties were also determined.