小麦条锈病对小麦产量的影响

为了研究条锈病对小麦产量的影响程度,利用充分接种与药剂保护作比较,对产量及产量构成因素进行量化分析.结果表明:接种与药剂防治间产量差异达极显著水平,参试材料减产幅度达1.07%~29.16%,减产明显;条锈病反应型、普遍率、严重度发生的严重程度是小麦减产的主要原因;除免疫、近免疫材料外,产量构成因素穗粒数、千粒重均有不同程度的降低,处理间达极显著水平;小麦减产与穗粒数下降有关,但与千粒重下降关系更大.该研究说明条锈病对小麦产量的负向作用显著,对小麦的危害严重;同时也证实了利用化学药剂适时防治小麦条锈病的可行性和必要性.

A study on the effect of wheat stripe rust on wheat yield

By comparing adequate inoculation treatment with chemical control,the yield and its component factors of wheat were quantitatively analysed in order to research the effect of stripe rust on wheat yield.The results showed that the difference of adequate inoculation to chemical control was very significant,the wheat yield under inoculation treatment had lost 1.07 %～29.16 %.The infection type,incidence and severity of stripe rust were the main factors that caused the yield loss.The yield component factors such as grain number per spike and 1000-grain weight of wheat,except immune and near immune test materials,decreased in differeht degree,and the difference between two treatments was very significant.The yield loss was related to reduction in grain number per head,but more closely to reduction of 1000-grain-weight.The results obove suggested that the negative effect of stripe rust disease on wheat yield was significant,and would bring serious damage to wheat growth.Meanwhile,the feasibility and necessity of fungicides to prevent stripe rust disease on time were also proved by the experiment.