Chitin (crab shell powder) was the best one for controlling disease with a 72.21% reducing of disease index in pots and 62.26% reducing in plots.

调查结果表明：几丁质（蟹壳粉）处理对棉花黄萎病的防治效果最好，在盆栽和小区试验中病情指数分别比对照降低了72.21%和62.26%；

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Chitin (crab shell powder) was the best one for controlling disease with a 72.21% reducing of disease index in pots and 62.26% reducing in plots.

调查结果表明：几丁质（蟹壳粉）处理对棉花黄萎病的防治效果最好，在盆栽和小区试验中病情指数分别比对照降低了72.21%和62.26%；

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