栽培人参对床土化学性质的影响

本文研究了吉林省主要栽参土壤(暗棕壤、白浆土)栽参前后土壤有机质特征和化学性质的变化。结果表明,栽参后,土壤有机质含量、养分含量降低;盐基饱和度、pH值、交换性Ca、K下降,而交换性H、Al上升;腐殖质趋于胡敏酸相对含量增加,而其芳化度降低。另外,在良好土壤管理条件下,虽有机质含量、养分含量均有提高,但盐基饱和度、交换性Ca、pH值下降,而交换性H、Al上升,土壤仍趋于酸化。故土壤酸化是老参地土壤最主要的本质化学特征。酸化问题是者参地改良利用的关键。

Cultivating Ginseng Affecting Chemical Properties Of Bed Soil

The humic and chemical properties of major Gensing cultivated soils, dark brown soils and planosols, were studied. The results showed that after growing Ginseng the organic matter and nutrients contents decreased and the exchangeable H+ and A13+ increased; meanwhile the humic acid fraction rised but the humufication decreased. The results also indicated that growing Ginseng would lead the acidification of bed soils. And this was the key problems for reusing of used bed soils.