新型植物激素拉脱维亚科学院微生物研究所的科学家利用植物的叶子、茎秆和花朵上的某些微生物研制成了一种植物生长激素，能使胡萝卜、黄瓜、番茄和甜菜作物的产量增加１５～２０％。只要把这种粉末状的激素药刑施入潮湿的土壤中，它就能分解出维生素Ｂ和某些能刺激作物生... New Plant Hormones The Latvian Academy of Sciences Institute of Microbiology has developed a plant growth hormone using certain microbes on the leaves, stems and flowers of plants that increase the yield of carrot, cucumber, tomato and beet crops by 15-20% . As long as the powdered hormones are applied to damp soil, it breaks down vitamin B and some of the nutrients that ...