魔芋种植对两种梨树林土壤养分的影响

Effects of Konjack Planting on Soil Nutrients in Two Kinds of Pear Plantations

林下种植是一种较有发展前景的,具有生态和经济的双重优势的农林复合经济模式。为研究梨树林+魔芋种植模式对林下土壤养分的影响,本试验对内江地区两种梨树(丰水梨和昌吉梨)林下的土壤进行了研究测定。结果表明:种植魔芋显著增加了丰水梨林下土壤全钙(TCa)含量,但对其余土壤养分无显著影响;而种植魔芋显著增加了昌吉梨林下土壤有效磷(AP)和全钾(TK)含量,土壤TCa含量则显著减少。可以看出,梨树林下种植魔芋对土壤某些养分有一定促进作用,在某种程度上改善了林下土壤,同时魔芋还能带来一定的经济效益。因此,梨树林下种植魔芋是一种可行的种植模式。

Understorey planting is a more promising development enjoying the dual, ecological and eco- nomic advantage of ago-forestry economic model. To study the impact of pear ＋ konjack forest planting patterns on understorey soil nutrients, the soil under two kinds of pears （Pyrus and Changji pears） forest was measured. The results showed that the total calcium（TCa） content had a significant increase in the of konjaek ＋ pear forest cultivation, but this cultivation model had no significant effect on the rest of the soil nutrients ; konjack ＋ pear planting model significantly increased available phosphorus （AP） and total po- tassium （TK） content in Changji pear forest soil, and yet its TCa content significantly reduced. It could be seen that understorey planting konjack in pear forest had a role in promoting the improvement of the forest soil in a way, and konjack also could bring some economic benefits. Therefore, understorey planting kon- jack in pear forest was a viable croooin~ oattern.