免耕玉米秸稈覆蓋對大型土壤動(dòng)物功能類群的影響
[Abstract]:In order to study the effects of no-tillage corn straw mulching on the functional groups of large soil animals, in April, July and October 2015, Large-scale soil animal communities were investigated in the conservation tillage test base of Lishu County, Siping City, by the Institute of Applied Ecology of Jilin Province, Chinese Academy of Sciences, and no-tillage field with or without corn straw mulching. The results showed that the density of saprophytic individuals was the highest, and the number of predatory groups was the most. Compared with conventional tillage plots, no-tillage with or without straw mulching increased individual density of saprophytic and predatory groups, but had no significant effect on phytophagous and omnivorous groups. There are obvious epiphytic and predatory macrofauna in all kinds of soil, but there is no consistency between phytophagy and omnivorous. In seasonal variation, the density of saprophytic and omnivorous groups was obvious. The highest density of saprophytic and omnivorous groups occurred in October, and the highest density of omnivorous groups appeared in July. The composition of predatory, phytophagous and omnivorous groups in different plots was very similar, but the similarity of predatory, phytophagous and omnivorous groups between conventional cultivated plots and NT-0,NT-100% was lower than that between NT-0 and NT-100% plots. In a word, no-tillage straw mulching would affect the functional groups of large soil fauna in farmland, but the responses of different groups to no-tillage straw mulching were not consistent.
【作者單位】: 吉林師范大學(xué)旅游與地理科學(xué)學(xué)院;
【基金】:國家自然科學(xué)基金(編號(hào):41401283) 吉林省科技發(fā)展計(jì)劃(編號(hào):20160520080JH) 吉林省教育廳科學(xué)技術(shù)研究項(xiàng)目(編號(hào):吉教科合字[2016]第224號(hào)) 吉林省四平市科技發(fā)展計(jì)劃(編號(hào):2015064)
【分類號(hào)】:S154
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