韭菜-番木瓜间作模式对根际土壤可培养微生物、土壤性状的影响

在海南省澄迈县番木瓜(Carica papaya L)种植区,于番木瓜生长期选择行间间作韭菜(Allium tuberosum),通过与韭菜间作,分析间作模式下对其根际土壤可培养微生物和土壤性状的影响。结果表明,韭菜-番木瓜间作可以显著提高全氮、有效磷、有机质的含量及p H,其中土壤有效磷增加显著,有利于植物对土壤有效磷的吸收。速效钾的含量无显著性提高,但土壤含水量明显下降。韭菜-番木瓜间作有利于土壤中微生物生长,土壤中微生物类型由真菌型向细菌型转化,降低了真菌性病害的发生。

Effects of Intercropping between Leek and Papaya on Culturable Microorganisms and Soil Properties in Rhizosphere Soil

In the papaya(Carica papaya L) planting area of Chengmai county,Hainan province,through intercropping with leek (Allium tuberosum) during the growth of papaya,the effect of the intercropping pattern on the cultivation of microorganism and soil properties of the soil was analyzed. The results showed that the contents of total nitrogen,available phosphorus,or-ganic matter and pH were significantly increased by leek papaya intercropping. The effective phosphorus increase in soil was beneficial to the absorption of efficient phosphorus in the soil. The content of available potassium was not significantly in-creased,but the soil water content showed a significant decrease. The intercropping of leek-papaya was beneficial to the growth of microorganism in the soil,and the microbial type of the soil was transformed from the fungal to the bacterial,reduc-ing the occurrence of fungal disease.