Cm, sessile or shortly stipitate; Normal leaves are thick, lanceolate, sickle-shaped, 12-30 cm long and 2-3 cm wide, with obvious glandular points. Flowers usually axillary, up to 4 cm in diameter; The calyx tube is about 65438±0.5cm long, with edge and small tumor, and blue-white wax coating; Calyx cap-shaped body is shorter than calyx tube, and has two layers, the outer layer is smooth, early falling, the inner layer is thick, with small nodules, and the center is conical. The new fruit is cup-shaped, 2-2.5 cm in diameter, with 4 edges, and no obvious tumor or furrow. The fruit margin is thick, with 4 pulps, which is the same as the height of the fruit margin. 1. Eucalyptus globulus is a plant with high water demand, which will also reduce the water available to other species. If planted in water-deficient areas, it will aggravate drought, soil erosion and eventually lead to desertification. Eucalyptus globulus is a plant with great demand for nutrients, which will do harm to other plants. The low soil recovery rate of eucalyptus leaves will aggravate this harm. Eucalyptus is not conducive to promoting the production of humus, that is, it can not maintain soil fertility for a long time like other tree species, resulting in the overall lack of soil nutrients. Eucalyptus globulus is a poisonous plant, because it has heterogeneous inhibition, which inhibits the germination and growth of other tree species by releasing chemical inhibitors from roots and litter, reduces the viability of other plants, including crops, and is also harmful to large or micro animals in the soil.