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棉籽硫酸脱绒有防治苗病和枯、黄萎病的作用,又便于播种。具体方法:先将精选过的棉籽放入缸盆里加热到摄氏30度左右,硫酸盛入大砂锅加热至摄氏110～120度。每次脱绒的棉籽按十公斤计算,一般加比重1.8左右的粗濃硫酸(比重1.6以下的稀硫酸不能用)一千毫升(折合重量约三斤半)。脱绒时,将热硫酸徐徐倒在棉籽上,边倒边不停地搅拌。硫酸对金属有强烈的腐蚀作用,拌种工具不要用铁器。到棉籽变黑发亮时,取少量棉籽样品,用清水漂
Cottonseeds sulfuric acid velvet prevention and treatment of seedlings and withered, Verticillium wilt, but also easy to sow. Specific methods: first selected cottonseed into the cylinder heated to about 30 degrees Celsius, sulfuric acid into the large casserole heated to 110-120 degrees Celsius. Each time the cashmere cottonseed calculation according to ten kilograms, the general increase in the proportion of about 1.8 coarse sulfuric acid (specific gravity less than 1.6 dilute sulfuric acid can not be used) 1000 milliliters (equivalent to about three pounds and a half weight). When velvet, the hot sulfuric acid slowly poured on the cottonseed, while pouring edge kept stirring. Sulfuric acid on the metal has a strong corrosive effect, dressing tools do not use iron. When cottonseed turns black and shiny, take a small amount of cottonseed sample and rinse with clear water