近几年，国内外制种商看好张掖适宜的水土及光热资源优势，纷纷前来繁育种苗，使制种业成为我区增加农村经济和财政收入的龙头产业。1999年制种面积达到了20万亩，预计2000年完成25万亩。随着制种面积的不断扩大，新发病虫逐年增多，据地区植保植检站1997－1999年产地检疫调查 In recent years, both domestic and foreign seed producers are optimistic about the suitable soil and water and light and heat resources advantages of Zhangye, and have come to breeding seedlings one after another, making seed production industry a leading industry in our region to increase rural economy and financial revenue. Planting area in 1999 reached 200000 acres, is expected to be completed in 2000 250000 acres. With the continuous expansion of the seed production area, the number of newly-emerged pests has increased year by year. According to the quarantine inspection of origin of the plantation inspection station in 1997-1999