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首页> 外文期刊>Journal of plant nutrition and soil science >Effects of organic and other management practices on soil nematode communities in tea plantation: a case study in southern China
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Effects of organic and other management practices on soil nematode communities in tea plantation: a case study in southern China

机译：有机和其他管理措施对茶园土壤线虫群落的影响：以中国南方为例

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摘要

Four major tea management practices (organic, pollution-free, conventional, and semi-natural) are employed in Chinese tea plantations at present. These practices can induce changes in the physiochemical parameters, microorganism community and enzyme activity in tea plantation soil. However, understanding of their effects on soil nematodes is still scarce. This study aimed to investigate whether and how different management practices affect the biodiversity, function, and structure of soil nematode communities in tea plantation habitats. The soil nematode community structures and ecological indices were determined from the soil samples collected more than 6 y after their respective farming practices were first applied, and different management practices did not greatly affect soil nematode community evenness or species diversity, but organic practice increased nematode trophic diversity, common species diversity, and species richness. Pollution-free practice considerably increased fungivorous nematodes, and both pollution-free and conventional practice decreased bacterivorous nematodes markedly in the subsurface layers of soil. Predator and omnivorous nematodes were found to be more abundant in semi-natural plantation. Organic practice was more sustainable and suitable for tea cultivation, with the greatest biodiversity, best nutrient conditions, higher and more stable C/N ratio and lower interference in the food web.
机译：目前，中国茶园采用了四种主要的茶管理实践（有机，无污染，常规和半自然）。这些做法可以引起茶园土壤理化参数，微生物群落和酶活性的变化。但是，对它们对土壤线虫的作用的了解仍然很少。本研究旨在调查不同的管理实践是否以及如何影响茶园生境中土壤线虫群落的生物多样性，功能和结构。在首次采用耕作方法后6年以上，从收集的土壤样品中确定土壤线虫的群落结构和生态指数，并且不同的管理方法对土壤线虫群落的均匀度或物种多样性没有太大影响，但是有机实践增加了线虫的营养性多样性，常见物种多样性和物种丰富度。无污染的做法大大增加了真菌性线虫，而无污染的做法和常规做法都大大减少了土壤表层的细菌性线虫。在半天然的人工林中，捕食性和杂食性线虫的含量更高。有机做法具有更大的生物多样性，最佳的养分条件，更高/更稳定的碳氮比以及对食物网的干扰更低，因此更具可持续性，适合于茶种植。

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