利用植物化感作用防治农田杂草，可以减少化学除草剂的使用，减轻环境压力，降低生产成本，达到增加作物产量等目的。
Applying plant allelopathy to inhibit weeds can not only efficiently reduce the use of chemical herbicide and cost, but also protect environment and improve crop product.
而且，植物食品减轻了环境压力，包括了全球变暖的问题。
Furthermore, plant-based diets ease environmental stress, including global warming.
研究城市污水处理厂污泥在农业方面的应用，对有效利用污水厂污泥，减轻污泥填埋的环境压力，具有十分重要的理论意义和实际价值。
The study on the sewage sludge application in agriculture, which is of great theoretical and practical value on the effective using of sewage sludge and reducing pressure on the environment.
研究城市污水处理厂污泥在农业方面的应用，对有效利用污水厂污泥，减轻污泥填埋的环境压力，具有十分重要的理论意义和实际价值。
The study on the sewage sludge application in agriculture, which is of great theoretical and practical value on the effective using of sewage sludge and reducing pressure on the environment.
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