将豆科植物干燥碎片掺入土壤中可减少根结线虫的数量,这是美国农业局的一项研究成果。土壤中的线虫可使作物减产,仅美国南方每年用于防治的成本就达5300万美元。豆科植物羊角豆、sun hemp和刀豆的干燥碎片混和盆栽土壤中,番茄根部戏虫数量可降低89%。这种杀虫力归功于豆科植物种子、茎、 Incorporating dry legumes into soil can reduce the number of root-knot nematodes, a research by the U.S. Department of Agriculture. Nematodes in the soil can cut crops, and the cost of prevention and treatment in the southern United States alone amounts to $ 53 million. In the mixed soil of potted legumes such as legumes, sun hemp and dried beans, the number of gameworms in tomato root can be reduced by 89%. This insecticidal power due to legumes seeds, stems,