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生树灰(或稻草灰)2分,水1分,煮滚30—40分钟,过滤即成硷水,取此硷水2分再煮到1分半左右,将磨成细粉的松香粉1分慢慢加入(这时火力要大)边倒边搅,至松香完全和硷水化合不分后,即制成乳能力很强的乳化剂。 用法:将1分乳化剂加入1分煤油(矿物油或植物油均可),轻轻振动,使油乳化后,即成油类乳剂源液。取1分原液兑水100倍,经我们试验可杀死菜蚜,烟蚜。死亡率达95％以上,对作物元药害。
Raw ash tree (or straw ash) 2 points, 1 minute of water, boil 30-40 minutes, filtered into alkaline water, take this alkaline water 2 minutes and cook to 1 and a half or so, ground into fine powder of rosin powder Add 1 point slowly (then the firepower should be large) while pouring edge to Rosin completely and alkaline water regardless of the combined, that is made of a strong emulsifier emulsifier. Usage: Add 1 point emulsifier to 1 point kerosene (mineral oil or vegetable oil can be), gently vibration, the oil emulsified, that is, into the oil emulsion source solution. Take 1 point of liquid watered 100 times, after our test can kill aphids, aphids. Death rate of 95% or more, on the crop yuan injury.