菠萝甘蔗轮作生产、生态效益分析研究

对菠萝甘蔗轮作效应进行研究。结果表明：与菠萝、甘蔗连作地比较，菠萝甘蔗轮作地能明显改善土壤的通气性，加速速效性养分的释放，提高土壤有机质含量，增加土壤微生物总量，增强土壤微生物整体活性；提高作物产量和产值，降低生产成本，有较好的经济效益。菠萝甘蔗轮作效应改善的实质在于：菠萝甘蔗轮作后，由于其作物种类的不同导致土壤结构的改善和土壤微生物种类和数量增多，土壤生物活性增强，并导致土壤速效养分的增加。

Effects of Crop Rotation of Pineapples-Sugarcane

Pineapple and sugarcane rotation experiment results showed that compared with the continuous cropping of pineapple-pineapple and sugarcane- sugarcane, the crop rotation of pineapple - sugarcane could improve the capability of aeration, accelerate the release of quick effective nutrients, increase soil enzyme activity, increase the total quantity of microbe and content of organic matter of soil, increase crop yield and output, reduce production costs, which results in good economic benefits. The effects of the crop rotation of pineapple-sugarcane lie in that after the rotation of pineapple-sugarcane, soil structure is improved and the species and number of soil micro-organism are increased, and the soil biological activity and the speedy nutrients increased.