关键词: 小麦, 条锈病, 粉锈宁, 最佳防治时期

Abstract: Artificial inoculation and chemical spraying by stages were conducted in experimental plots under field conditions to obtain various control results in order to find out the best spraying period and time in the control of wheat stripe rust with chemical Priabimefon. The experiment was arranged in a random complete block design with 3 replications. The 6 treatments were spraying chemicals at elongation stage, at ear-bearing stage, at elongation stage plus ear-bearing stage, at flowering stage, or at elongation stage plus ear-bearing stage and flowering stage, and the control(spraying no chemical). During the experimental period, the growth stage for different treatments was recorded, the productive spikes, grain number per spike and 1000-grain weight were investigated. Each plot was harvested separately. The result shows that the stripe rust can course heavy lost in yield and yield components, and the order is grain number per spike >1000-grain weight >productive spikes. Spraying chemical at elongation stage plus ear-bearing stage can effectively protect the crop from stripe rust damage, which is the best approach in the experiment. Spraying chemical the center of stripe rust is to control effectively it and to obtain high yield.

Key words: wheat, stripe rust, priabimefon, control approach