幼龄胶园间种菠萝对土壤肥力和种植效益的影响

Effect of Young Rubber Inter-planting with Pineapple on Soil Fertility and Economic Benefit

通过在1~3龄胶园行间间种菠萝对胶园土壤肥力、胶树生长及经济收益的调查研究,分析间种菠萝对胶园生态效益和经济效益的影响。结果表明,幼龄胶园间种菠萝改变了胶园生态环境和土壤肥力,提高土壤温度0~2.6℃,在菠萝生长生殖期提高土壤含水量0.80%~7.63%,土壤有机质含量有所提高,土壤氮、速效磷、速效钾含量均表现为降低,从而使橡胶树年增粗减慢1.11 cm。从经济效益方面来看,间种菠萝净增加59 775元/hm^2的收益。

To investigate the ecological and economic benefits of rubber plantation intercrepping with pineapple, the effects of young rubber plantation interplanfing with pineapple on the soil fertility, growth of rubber trees and economic benefit were studied. The results showed that the ecological environment and soil fertility were changed by interplantation with pineapple in young rubber plantation, of which the soil tem- perature and water moisture were increased by 0 -2.6 ℃ and 0.80 % -7.63 %, respectively, and the soil organic matter content was im- proved slightly, but the contents of soil soluble N, available P and available K were reduced, which led to the reduction of 1.11 cm of annu- al stem enlargement. In addition, from the point of economic benefits, 13 695 yuan/hm2 net increased economic benefit was obtained.