有机肥防治马铃薯早疫病试验

2010-2011年通过田间小区方法进行了有机肥防治马铃薯早疫病（Alternaria solani）试验。结果表明：对于品种‘克新1号’和‘费乌瑞它’667 m^2施有机肥1 500-5 000 kg及667 m^2施有机肥1 500 kg＋复合化肥50 kg均对马铃薯早疫病有显著的防治作用,防效为38.8%-68.8%,特别是667 m^2施有机肥5 000 kg、667 m^2施有机肥1 500 kg＋复合化肥50 kg防效更加显著,增产21.2%-27.8%。667 m^2施有机肥1 500-5 000 kg及施有机肥1 500 kg＋复合化肥50 kg比施复合化肥50 kg提早出苗1-4 d不等,品种‘费乌瑞它’提早出苗更明显,但施用或增施有机肥对2个品种出苗率无影响。施用有机肥为马铃薯早疫病的防治提供一个新的途径。

Potato Early Blight Control with Organic Fertilizer

Organic fertilizer was tested in field plot experiments during the years of 2010-2011 to control potato early blight.The results indicated that the treatments of organic fertilizer 1 500-5 000 kg/667 m^2and organic fertilizer 1 500kg/667 m^2＋ Mix-fertilizer 50 kg /667 m^2 were all effective to control potato early blight for both varieties of ＇Kexin1＇ and ＇Favorita＇.Their control effects were between 38.8% and 68.8%.Two treatments of them,organic fertilizer 5 000 kg/667 m^2and organic fertilizer 1 500 kg/667m^2＋ Mix-fertilizer 50 kg/667 m^2were especially more effective.Yield of these two treatments increased about 21.2%-27.8%.The treatments of organic fertilizer 1 500-5 000 kg/667 m^2advanced emergence date by 1-4 days.The variety of ＇Favorita＇ emerged earlier.The emergence rate for all treatments was the same.Organic fertilizer might be one new way of controlling potato early blight.