秋延迟大棚西葫芦白粉病防效试验

Control Effects Experiment of Powdery Mildew on Summer Squash in Autumn Greenhouse

通过采用不同剂量10%苯醚甲环唑水分散粒剂、50%醚菌酯水分散粒剂防治秋延迟大棚西葫芦白粉病田间药效试验。试验结果表明,西葫芦白粉病发病初期使用10%苯醚甲环唑水分散粒剂1 200、970、750 g/hm2和50%醚菌酯水分散粒剂300、225 g/hm2进行喷药防治,防治效果分别达到88.21%、87.54%、85.94%和85.9%、84.76%,防效较好,且对西葫芦无药害。

In this paper, we took the experiment of using different dosage of 10% difenoeonazole water dispersible granule （WG） and 50% kresoxim-methyl WG to test the effect of powdery mildew on summer squash in autumn greenhouse. The results showed that in the early stage of summer squash powdery mildew, we used 10% difenoconazole WG of 1 200 g/hm2, 970 g/hm2, 750 g/hm2 and 50% kresoxim-methyl WG of 300 g/hm2, 225 g/hm2 to spray, the control effects were good which reached 88.21%, 87.54%, 85.94%, 85.9% and 84.76%,and with no phytotoxicity on summer squash.