The quantified cereal cyst nematodes(CCN) (Heterodera avenae)were inoculated at the same time as the wheat sowing. The life cyst was observed after rooting.

• 小麦播种时定量接种禾谷孢囊线虫(CCN)(Heterodera avenae)的孢囊,发芽生根后进行系统观察。