调查了鄂北地区银杏集中产区的安陆、随州等市的银杏苗圃、叶用林和果用林的银杏叶部病害的种类及危害状况。
The disease types and the endangering situation of Ginkgo biloba Nursery , Ginkgo garden for leaf use , fruit forest of Anlu and Suizhou cities in Hubei were investigated .