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Pencycuron*是一种苯脲类型的新型杀菌剂.离体抗菌谱试验表明,Pencycuron对Rhizoctonia Solani,特别是对Pellicularia Sasakii具有特异的抗菌活性.该药剂在含药琼脂培养基上低浓度下对P.Sasakii菌丝的扩展也表现出极强的抑制作用,而且可引起菌丝体形态异常.此点,与井岗霉素有相似之处.室内植株测定表明,Pencycuron抑制菌丝侵染作用明显优于井岗霉素,抑制病斑扩展作用比井岗霉素差.防治水稻纹枯病的侵染有稳定的持久性,可达35天以上,而井岗霉素不足14天.因此,该药是一种以长效性为特征的保护性杀菌剂.室内人工模拟降雨测定,施药后50分钟,淋洗20mm雨量,效果明显受到影响.田间试验与室内结果一致.
Peniccuron * is a new fungicide of the phenylurea type.Experimental antibacterial spectrum tests show that Pencycuron has specific antibacterial activity against Rhizoctonia Solani, especially against Pellicularia salsakii.Phccuron * .Sasakii mycelium expansion also showed a very strong inhibitory effect, and can cause abnormal morphology of mycelium.This point, and Jinggangmycin have similarities.Determination of indoor plants showed that Pencycuron inhibit mycelium infection significantly Is better than Jinggangmycin, inhibit the spread of lesion than Jinggangmycin.Prevention and control of rice sheath blight infection has a stable persistence, up to 35 days, and Jinggangmycin less than 14 days.Therefore, This medicine is a kind of long-acting protective fungicide.Induced simulation of indoor rainfall, spraying 50 minutes after application, 20mm rainfall shower, the effect was significantly affected.Field experiments and indoor results.