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为探讨硅酸钠在室内和田间对葡萄炭疽病的防治效果,以巨峰葡萄为材料,对葡萄炭疽菌孢子萌发、菌丝生长速率及室内和田间防治炭疽病效果等进行测定。结果表明:不同浓度硅酸钠对葡萄炭疽菌的孢子萌发和菌丝生长均有抑制作用,且随浓度升高抑制作用增强;室内接种炭疽病菌5 d后,15、20和25 mmol/L硅酸钠对葡萄炭疽病的防治效果分别为30.58%、44.37%和52.71%,且抑制效果差异极显著;田间最后1次喷药10 d后,15、20和25 mmol/L硅酸钠对葡萄炭疽病的防治效果分别为66.94%、67.16%和73.46%,喷施10%苯醚甲环唑6次的防治效果为76.84%,喷施3次的防治效果为64.29%;25 mmol/L硅酸钠与喷施6次苯醚甲环唑的防治效果差异不显著,但与喷施3次苯醚甲环唑的差异极显著。研究表明,在生长季可利用硅酸钠与常规药剂交替使用来防治葡萄炭疽病。
In order to explore the control effect of sodium silicate on grape anthracnose in the field and in the field, the grape sprouts germination, mycelium growth rate and anthracnose control indoors and in field were determined by using Kyoho grape as material. The results showed that different concentrations of sodium silicate inhibited the spore germination and mycelial growth of V. viticis, and inhibited the growth with increasing concentration. After 5 days of inoculation with Colletotrichum gloeosporioides, 15, 20 and 25 mmol / L of silicon The control effect of sodium acid on grape anthracnose was 30.58%, 44.37% and 52.71%, respectively, and the effect of inhibition was extremely significant. After the last spraying of field for 10 days, the effect of 15, 20 and 25 mmol / L sodium silicate on grape The control effect of anthracnose was 66.94%, 67.16% and 73.46% respectively. The control effect of spraying 10% difenoconazole 6 times was 76.84%, and the control effect of spray spraying 3 times was 64.29%. The control effect of 25 mmol / L silicon There was no significant difference in the control effect between sodium sodiun and spraying difenoconazole 6 times, but there was a significant difference between spraying sodium difenoconazole and difenoconazole. Studies have shown that during the growing season, sodium silicate can be used interchangeably with conventional pesticides to control grape anthracnose.