摘要
对章古台不同感病等级樟子松根际土壤和非根际土壤进行了对比研究,结果表明:樟子松感病后,根际土壤的 pH值随感病程度的加重而上升,有机质含量明显下降,CEC值有一定程度的提高,根际土壤中盐分的富集程度明显下降,全N、速效N、速效K的富集程度和速效P的亏缺程度明显下降;樟子松根际土壤微生物总数和酶的活性随感病等级的加重呈下降趋势,说明樟子松感病后,其根系的生物活性下降。
The rhizosphere soil properties of Pinus sylvestris var. mongolica plantation with different infection grades were studied. The results showed that with exacerbating of disease, the pH value of rhizosphere soil increased and the content of organic matter decreased significantly. CEC values of rhizosphere soil were higher than those in non-rhizosphere soil and varied complicatedly. The extent of soluble salt accumulation decreased with exacerbating of disease. The accumulation extent of total N, available N, available K and the deficiency extent of available P of rhizosphere soil decreased significantly. The amount of microorganism and the activity of different kinds of enzymes of rhizosphere soil showed a trend of decrease.
出处
《林业科学研究》
CSCD
北大核心
2006年第1期88-92,共5页
Forest Research
基金
辽宁省科技攻关招标项目"辽西北荒漠化土地综合治理技术研究与示范"(2001207003)资助
关键词
樟子松
感病等级
根际土壤
非根际土壤
Pinus sylvestris var. mongolica
infection grade
rhizosphere soil
non-rhizosphere soil
