请问专家:石硫合剂怎么制作?

请问专家:石硫合剂怎么制作?
2025-03-24 13:16:48
推荐回答(2个)
回答1:

传统的石硫合剂熬制法比较繁琐,一些果农难以把握。笔者在实践中总结出了石硫合剂的熬制新方法,简便易学。新法熬制石硫合剂概括起来就是:慢烧火,加锅盖,加调料,放石块;先撒硫磺粉,后放石灰块,不用人搅锅,时间只一半,工序配方改,成本降一块。具体操作如下:
1.选料、配方及建锅灶。石灰应选择白色、质轻、无杂质、含钙高的优质石灰。水应用清洁的河水、井水等。硫磺要用色黄质细的优质硫磺,最好达到350目以上。洗衣粉以中性为好。石块以拳头大小、质轻的为好。硫磺、石灰、水、石块的比例为2∶1∶15∶5,再加入总用水量0.4%的洗衣粉。锅灶建造时要两锅相连,炉膛要大而广。
2.熬制方法。前锅根据配置比例在锅中加好水,后锅的水要多于前锅(烧开水备前锅用,使前锅的水量保持在一定的比例),盖上锅盖开始烧火,当水温达60℃时把化好的洗衣粉倒进锅里进行搅拌,接着用罗把硫磺粉均匀撒在锅里,边撒边搅拌,由于洗衣粉的作用,硫磺粉很快溶于水。当水温达到80℃时立即把石灰块顺锅边放到锅里,接着把石头块也放到锅里,搅拌几下,盖上锅盖进行熬制,并开始计时。熬制时,由于石灰放出大量的热量,水马上沸腾,石灰和硫磺开始进行反应,这时炉膛里的火应大而均匀,使整个锅沸腾,以促进反应速度。有时锅里气泡很大会溢出药液来,掀一下锅盖,气泡就会马上破裂。因锅里放了石块,会自动搅拌,只要火候掌握得好,基本不会跑锅。计时到15分钟时火应匀而稳,20分钟后火要弱而匀。烧火应掌握前大、后小、中间稳,始终保持整个锅沸腾。熬制25分钟时,应及时观察火候,当药液熬到酱油色、锅底渣子变为深绿色时马上停火出锅。如果渣子呈墨绿色,则说明火候已过,有效成分开始分解;若渣子呈黄绿色,表明火候不到,应继续加火。
3.优点。新法熬制石硫合剂可使锅内温度均衡适宜,可防止硫磺蒸发,减轻污染,而且省工、省力、省燃料,同样的原材料可使药液增加30%,燃料节省50%以上,人工节省40%,而且药液质量高,渣子少,结晶少,多硫化钙的含量高。
4.使用方法。一般果树萌芽前喷施3-5波美度石硫合剂,杀灭各种病菌、虫卵及越冬害虫。一般熬制的石硫合剂浓度为20波美度左右(具体浓度可用波美比重计测量,或用水对照测定)。石硫合剂的土法测定方法是:找一只白色透明的玻璃瓶,里面盛水0.5千克左右,并标注水位线,然后将水倒出,装人熬制好的石硫合剂至水位线处,称出质量,最后计算熬制石硫

回答2:

一般认为,生石灰∶硫黄∶水的比例为1∶1.5~1.4∶13的配合量煮制的石硫合剂经济效益最好。煮制石硫合剂必须用瓦锅或生铁锅,不能用铜锅或铝锅,否则易腐蚀损坏。把称出的块状洁白的生石灰放在瓦锅或生铁锅中,洒入小量水使生石灰消解,待充分消解成粉状后再加入少量水调成糊状。把称出的硫黄粉一小份一小份地投入石灰浆中,使混合均匀。最后加足水量,把搅拌棒插入反应锅中记下水位线,然后加火熬煮,在沸腾时开始计算时间,保持沸腾50~60分钟(熬煮过程中损失的水量用热水在反应时间最后的15分钟以前补充完),此时锅内溶液呈深红棕色。取出用四、五层纱布滤去渣滓,滤液即为澄清酱油色石硫合剂母液。据经验,反应锅内的渣子开始变为蓝绿色时,即反应时间够了。熬制的母液用比重计测出比重,一般熬制的石硫合剂在20~30波美度之间,必须加水稀释后才能使用。

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