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试验表明，小麦成株期根腐叶枯病情指数，与小麦产量及其成产要素中的千粒重、穗粒数呈极显著负相关，与病粒率呈极显著正相关，发病越早，病情越重，减产越多。并根据防治效益等综合因素，提出在小麦抽穗扬花期病情指数达到４．４％时应进行防治的指标。
The results showed that the disease index of root blight of wheat at the adult stage was significantly and negatively correlated with the grain weight and the number of grains per spike in wheat yield and yield factors, The heavier the more you cut. Based on the comprehensive factors such as prevention and control benefits, the index of prevention and treatment should be put forward when the disease index reaches 4.4% at heading and heading stage.