disease and pest problems
... direct seeding 直接播种 disease and pest problems 病虫害 diversified food production 多样化粮食生产 ...
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disease and pest problems
病虫害问题
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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However production is in decline in many regions as a result of pest and disease problems that cannot be managed due to the high cost of pesticides and their negative environmental effects.
然而许多地区的产量在下降，因为杀虫剂成本高昂以及对环境的不利影响，病虫害问题无法应对。
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