固氮醋杆菌可使甘蔗产量提高两倍巴西科研人员发现了一种固氮菌。这种细菌生活在甘蔗的根部，从空气中吸取氮供给甘蔗，因此能使每公顷甘蔗年产量从６０吨提高到１８０吨。巴西科学家根据蔗田收获后土壤中仍残留一定数量的氮这一现象，开始对甘蔗的根、茎和叶中的固氮微生... Azotobacter vinegar can double the yield of sugarcane Brazilian researchers found a nitrogen-fixing bacteria. This bacterium, which lives at the root of sugarcane and draws nitrogen from the air to feed sugar cane, can increase the annual output of sugarcane per hectare from 60 to 180 tons. Brazilian scientists start nitrogen fixation of the roots, stems and leaves of sugar cane according to the phenomenon that a certain amount of nitrogen remains in the soil after harvest in the sugarcane field ...