Soil nematode community structure and diversity in banana garclen in Ledong County of Hainan Province

To study the effects of long-term banana continuous cropping on soil ecosystem，nematode classification methods were adopted to study the soil nematode community structure and diversity under different continuous cropping years（1 a，2 a，3 a and 4 a）in Ledong County of Hainan Province. The results indicated that plant-parasitic nematodes were dominant in the community，Rotylenchulus were the most dominant species which had a trend to widening. No difference existed in the diversity index，evenness index，richness index and gas Lesi card index of soil nematode community structure. The main physical and chemical properties including soil organic matter，total phosphorus and total potassium content had significant or highly correlation with the index of nematodes community，which was an important indicator of soil nematode ecological communities. In the banana plantation in Ledong of Hainan，we could increase organic fertilizer and phosphate fertilizer，adjusting and controlling potash fertilizer to regulate the physicochemical properties of soil and restore the health of soil.