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问:在花卉栽培过程中,常见有些花卉出现新叶变小、皱缩反卷、奇形丛生的现象。不久便在叶柄、叶背面或嫩枝上出现赤褐色斑块或网纹,但肉眼观之又未发现任何虫害或明显病斑。这到底是什么病害? 答:花卉发生这种现象,过去许多人(包括笔者在内)误认为是病毒感染所致,或是土壤问题。但经多年观察试验,发现此现象是由于螨类中的锈壁虱(Phylocoptes oleivorus Ashm)为害所
Q: In the process of flower cultivation, there are some common flowers appear new leaves smaller, wrinkled and anti-roll, strange phenomenon. Shortly thereafter, auburn patches or lines appear on the petiole, on the back of the leaves or on the shoots, but no pests or conspicuous spots were observed on the naked eye. A: This phenomenon occurs in flowers. In the past, many people (including the author) misunderstood it as being caused by a virus infection or a soil problem. However, after many years of observation and test, it was found that this phenomenon was caused by Phylocoptes oleivorus Ashm