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青海云杉种实害虫的主要种类为云杉球果小卷蛾，主要发生于天然林及母树林，虫害株率高达１００％。发生规律为低海拔林分重于高海拔林分，老母树林重于新母树林，纯林、疏林重于混交林和郁闭林分，与天然林相距较远的种子园内无直接种子害虫发生。在同一山坡上，依坡位升高虫害减轻，平缓坡林分重于陡坡林分，不同坡向间无明显差异；干燥林分重于湿润林分。虫害果与健康果相比，出种率下降２．４％，健饱种数下降１８．３％，种子虫蛀率达１６．２％，千粒质量下降０．９３ｇ，发芽率降低２８％（平均单果虫口密度在３头左右）。
The main species of Picea crassifolia is Psidium coniophylla, which occurs mainly in natural forests and mother trees. The pest rate is as high as 100%. The law of occurrence is that the lower elevation is heavier than the high altitude stand, the old mother forest is heavier than the new mother forest, the pure forest and the sparse forest are heavier than the mixed forest and the canopy stand. There is no direct seed in the seed garden far away from the natural forest Pests occur. On the same hillside, pest alleviation was alleviated according to the increase of slope position. The flat slope forest was heavier than the steep slope forest and there was no significant difference between different slope directions. The dry forest was heavier than the wet forest stand. Compared with healthy fruit, the pest and fruit decreased by 2.4%, 18.3% and the seed moth-eaten rate by 16.2%, the quality declined by 0.93g and the germination rate decreased by 28% (Average single fruit population density in about 3).