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针对大豆生长期内单一与复合施用乙草胺和呋喃丹对土壤线虫群落结构的影响进行研究。研究结果表明,乙草胺和呋喃丹单一与复合处理中土壤线虫的数量在各采样时期之间、处理之间及二者的交互作用之间均呈现极显著差异(P<0.01);在大豆生长的不同时期,线虫各营养类群的数量受到不同程度的抑制。对线虫生态指数的分析结果表明,乙草胺单一处理对线虫的丰富度表现出促进效应,而呋喃丹单一处理和二者复合处理对线虫丰富度表现出抑制效应;各处理均显著降低了线虫的总成熟度指数(ΣMI),表明线虫群落受到扰动,食物网受到胁迫。
The effects of acetochlor and carbofuran alone or in combination on soil nematode community structure during soybean growth period were studied. The results showed that there was a significant difference (P <0.01) between the number of soil nematodes in the single and compound treatment of acetochlor and carbofuran during the sampling period, between treatments and between the two treatments (P <0.01) The different stages of growth, the number of nematodes nutrition groups are subject to varying degrees of inhibition. The analysis of nematode ecological index showed that acetochlor single treatment showed a promoting effect on the richness of nematodes, while the single treatment of both carbofuran and the combination of the two showed inhibitory effects on the abundance of nematodes. Each treatment significantly reduced the number of nematodes Of the total maturity index (ΣMI), indicating that the nematode community disturbed food web under stress.