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旱圃接菌测定表明,6种水稻种衣剂防治稻瘟病的效果都十分明显,除种衣剂1号的防病效果为69.35%外,其余5种种衣剂的防效均达91%~98%。田间小区接菌试验表明,包衣稻种水育秧47天,种衣剂2号、3号、4号、6号的防效为72.96%~84.89%,1号、5号为55%左右。水育秧田间小区接菌播种后30天,种衣剂2号、3号、4号、6号的防效为91%~94%,1号、5号为78%左右,20%三环唑750倍药液浸种的防效为32.28%;播种后46天,种衣剂1~6号的防效为41.77%~70.79%。三环唑浸种的防效为9.41%;播种后89天,种衣剂1号、2号、3号、4号、6号的防效为40.62%~79.25%,5号处理基本死苗,空白对照区亦全部死苗。水稻成熟期调查,种衣剂1号、2号、3号、4号和6号处理区,有效穗每公顷依次为244.5万、278.5万、275.4万、194.0万和176.8万;种衣剂5号以及三环唑浸种和空白对照区的有效穗均为零。
The results of inoculation of dry nursery showed that the effect of six kinds of rice seed coating agents in preventing and controlling rice blast were very obvious. The control effect of seed coating agent No. 1 was 69.35%, and the control effects of the other five kinds of seed coating agents reached 91 % ~ 98%. The experiment of inoculation in the field showed that the control effect of seed coating on seedling 47 days was 72.96% ~ 84.89% for seed coating No. 2, No. 3, No. 4 and No. 6, No. 1 and No. 5 were About 55%. After 30 days of inoculation in the field of seedling of hydroponic seedling, the control effects of seed coating agent No. 2, No. 3, No. 4 and No. 6 were 91% ~ 94%, No. 1 and No. 5 were 78%, and that of 20% tricyclazole The control effect of 750 times liquid soaking was 32.28%; 46 days after sowing, the control efficiency of seed coating agent 1-6 was 41.77% ~ 70.79%. The control effect of tricyclazole soaking was 9.41%. After 89 days of seeding, the control efficiency of coating agent No. 1, No. 2, No. 3, No. 4 and No. 6 was 40.62% ~ 79.25% Treatment of basic death seedlings, blank control area also all dead seedlings. Rice maturity survey, seed coating agent 1, 2, 3, 4 and 6 treatment area, the effective panicle per hectare followed by 2.445 million, 2.785 million, 2.754 million, 1.94 million And 176.8 million respectively; seedling agent No.5 and tricyclazole seed soaking and blank control area of effective spikes were zero.