南丰蜜桔疮痂病综合防治技术研究

经 1 997～ 1 999年的研究 ,提出了以下南丰蜜桔疮痂病的综合防治技术措施 :春季进行 4次药剂防治 ,即在春芽露顶 1～ 2mm和其后 1 0～ 2 0d分别施用 1∶0 .8∶1 0 0的波尔多液 1次 ,在谢花末期 (谢花 90 %时 )施用 77%可杀得 1次 ,在小果期 (第 1次生理落果前后 )施用 70 %代森锰锌或 5 0 %多菌灵 1次。秋季对重病桔园用多菌灵防治 1次。冬季进行农业防治 ,包括清除、烧毁病枝落叶、施用石硫合剂。采用上述综合防治技术措施 ,1 999年对南丰蜜桔疮痂病的防治效果达 75 .75 %～ 81 .0 7%。

Studies on Integrated Control Technique of Citrus Scab (Sphaceloma fawcetti)

According to the experiment results during 1997～1999,the integrated control technique of citrus scab(Sphaceloma fawcetti) is put forward as follows:carrying out chemical control four times in spring,i.e. spraying Bordeaux mixture( CuSO:burned lime∶HO=1∶0.8∶100) on the day when the length of spring bud reaches to 1～2 mm and on the 10～20th day after the date mentioned above,spraying 77% Kocide when 90% of flowers wither,spraying 70% Mancozeb or 50%Carbendazim at small fruit stage (around the first physiological abscission of fruits). Spraying Carbendazim one times in autumn for seriously diseased citrus garden. Conducting agricultural control in winter,i.e. clearing away and burning diseased branches and leaves,applying Lime sulphur one times.The control effect of applying above integrated control technique on citrus scab came to 75.75%～81.07% in 1999.