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残留毒气
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The mushroom brown rot disease caused by Mycogone perniciosa Magn. has an economic importance in Shanghai suburbs. It can cause serious damage and reduce yield largely, even result in failure of harvest. Desirable control results can be got by fumigating casing soil with formalin. 1100 ml 36%~38% formaldehyde or 870 ml industrial formaldehyde diluted with 10000 ml water were sprayed in to one cubic metre casing soil which had been sunned for 3 to 4 days in summer. After that the casing soil was heaped up and...

The mushroom brown rot disease caused by Mycogone perniciosa Magn. has an economic importance in Shanghai suburbs. It can cause serious damage and reduce yield largely, even result in failure of harvest. Desirable control results can be got by fumigating casing soil with formalin. 1100 ml 36%~38% formaldehyde or 870 ml industrial formaldehyde diluted with 10000 ml water were sprayed in to one cubic metre casing soil which had been sunned for 3 to 4 days in summer. After that the casing soil was heaped up and covered with straw first and then with plastic film for remaining tightly closed 24 to 48 hours even some days. 7 days before casing, the plastic film must be lifted off to let toxic gases within casing soil go out. With use of the casing soil treated with formalin to cover mushroom beds, the disease can be controlled and the yield of mushrooms will be higher.

蘑菇褐腐病迄今是上海郊县蘑菇的重要病害,用甲醛溶液熏闷蘑菇覆盖土,对该病有较理想的防效。经测定,覆盖土在夏季高温季节曝晒4~5d,随即用甲醛溶液(化学纯甲醛1100ml/m3或工业甲醛870ml/m3,兑水10kg),均匀喷洒备用覆盖土,上堆后覆盖一薄层稻草,再覆塑料薄膜封闷24~48h。在菇床覆土前一周左右掀开薄膜,让土中残留毒气挥发干净。用该法处理蘑菇菇床覆土,可使蘑菇褐腐病得到有效控制,从而获得蘑菇的正常产量。

 
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