4种三唑类杀菌剂对黄瓜生长的影响

本文研究了在黄瓜幼苗期和三叶期施用4种三唑类杀菌剂对黄瓜生长的影响,幼苗期土壤浇灌结果表明:己唑醇和戊唑醇对黄瓜的影响作用相当且较明显,在12.5～200mg/L时,株高抑制率为25%～70%,己唑醇对根长的抑制率在20%～55%。丙环唑和腈菌唑对黄瓜的影响相对较弱,在50～200mg/L时,对株高的抑制率为10%～45%,在100～200mg/L时,对根长的抑制率仅为10%～15%。4种药剂对根鲜重均有明显的增加作用。三叶期茎叶喷雾处理结果显示,己唑醇和戊唑醇在25～100mg/L时,株高抑制率为15%～40%,丙环唑和腈菌唑50～100mg/L的株高抑制程度为5%～15%,4种药剂50～100mg/L对叶片叶绿素含量的增加在5%～30%。

Effects of 4 Triazole Fungicides on Cucumber Growth

Effects of 4 triazole fungicides on cucumber seedings growth and three Leaves growth were studied. The results showed that the effects of hexaconazole and penconazole on cucumber seedings growth with soil irrigation treatment were at the same level. At the dose of 12.5mg/L- 200mg/L , the inhibitive rates of shoot length were 25%-70%. The effects of propiconazole and myclobutanil were comparatively weak. At the dose of 10%-45%. The inhibitive rates of root length were 100mg/L -200mg/L. 50mg/L-200mg/L, the inhibitive rates were ranged from 10% to 15% at the dose of The root weights were increased obviously with treatment of the 4 triazole fungicides. The results of three leaves growth indicated that the inhibitive rates of hexaconazole and penconazole at the dose of 25mg/L-100mg/L were 15%-40%, while the inhibitive effect of propiconazole and myclobutanil were 5%-15% at contents in the leaves were increased by 5%-30% the dose of 50mg/L-100mg/L. after treatment of the 4 triazole The chlorophyll fungicides.