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近年来,地处黑龙江省碳酸盐黑钙土和风砂盐碱土地区的大庆地区玉米花白苗病发生相当普遍.特别是在风砂盐碱土耕地上种植的玉米发病率可达70%以上,面积达14.5万亩,约占我区玉米种植面积的20%,严重影响着玉米的生产.据国内外资料介绍,玉米花白苗病系缺乏锌素营养所致.为此,我们于1981—1982年应用硫酸锌先后进行了盆栽,小区和大面积试验,防治效果达78.1—98.1%,平均每亩增产玉米136.3斤,增产15.6—35.6%,效果极为明显.磁将试验结果总结如下.
In recent years, the occurrence of poplar seedling disease in Daqing area, located in carbonate chernozem and wind-blown saline-alkali soil areas in Heilongjiang Province, is quite common, especially the corn planted in wind-blown saline-alkali soil can reach 70% Up to 145,000 mu, accounting for about 20% of the corn acreage in our district, seriously affecting the production of corn.According to the introduction of domestic and foreign information, the poplar white seedling disease is caused by the lack of zinc nutrition.To this end, we in 1981-1982 Application of zinc sulfate has been carried out in pots, plots and a large area test, the control effect of 78.1-98.1%, an average of 136.3 kg of corn per acre yield, yield 15.6-35.6%, the effect is extremely obvious.