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用生物气泥淹没土壤会抑制根结线虫虫,并改变土壤线虫群落

Yufei Li¹, Bensheng Liu¹, Jijin Li¹

¹Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China.

|May 14, 2024

概括

用生物气泥淹没土壤有效抑制根结线虫 (RKN) 并促进两年内的植物生长. 这种可持续的方法也对土壤线虫群体产生积极影响,没有长期的污染风险.

科学领域:

农业科学农业科学
遗体学遗体学是一个学科.
土壤生态学土壤生态学

背景情况:

根结线虫 (RKN) 是重要的农业害虫,造成大量的作物损失.
现有的RKN控制方法往往缺乏现场验证或存在环境缺陷.
生物气泥应用与土壤加热相结合是一种潜在的环保RKN抑制策略.

研究的目的:

评估沼气泥土土壤洪水对RKN疾病控制的现场有效性.
评估沼气泥对作物生长和土壤线虫群落结构的影响.
确定与这种方法相关的长期影响和潜在的土壤污染风险.

主要方法:

进行了为期两年的实地实验,使用了四种处理方法:控制,常规RKN控制,70%的沼气泥和未稀释的沼气泥.
测量了根结指数,西瓜生长参数 (植物高度,茎直径) 和土壤线虫群体指数.
进行了对NH4+-N,重金属和的土壤分析.

主要成果:

所有处理方法在第一年显著降低了RKN;生物气泥处理方法 (BS70,BS100) 在第二年保持了显著的抑制,BS70显示了74.6%的控制.
生物气泥最初抑制了西瓜的生长,但在第二年促进了它的生长,显著增加了茎直径.
生物气泥在第二年增加了线虫丰富度和香农指数,改变了社区结构,但没有增加土壤食物网的复杂性.

结论:

用生物气泥淹没土壤是控制RKN和改善田间条件下的作物生长的有效方法.
该方法积极影响土壤线虫多样性和社区结构,而不会造成长期的土壤污染.
生物气泥应用为农业的综合性害虫管理提供了一个有希望的可持续方法.

关键词:

温室条件温室条件温室条件尼马动物疾病管理管理土壤的食物网是土壤的食物网.土壤污染风险土壤污染风险瓜子瓜子水瓜

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