Thirty years ago, if you were walking along the coast of the Netherlands and picked a two-spot ladybug off the leaf of a European lime tree, chances were that the bug would be red with black spots.

30年前，如果你走在荷兰的海岸边，从菩提树上取下一只双斑瓢虫，你会发现这只瓢虫的颜色是红色黑斑的；

youdao

Gaolan No. 2 seedlings showed slightly lower growth rate but lower natural incidence by black spot and leaf rust than that of Wuqi Non and Xining No 5 seedlings.

皋兰2号种苗次之，但皋兰2号种苗对黑斑病和叶锈病的自然发病率又低于吴旗11号和西宁5号种苗。

youdao

The survey found that the most serious diseases were black mould of Leucaena spp. , anthracnose of Desmodium spp. , Tubercularia leaf spot of Glycine wightii spp. , and anthracnose of Arachis spp.

为害较重的病害有银合欢黑霉病、山蚂蝗炭疽病、爪哇大豆瘤座孢叶斑病和野花生炭疽病等。

youdao