根据惠阳专区林业处介绍和平松香厂使用硫酸割脂的先进经验,广东义合松香厂于58年11月派骆佛胜同志到义合公社十三营实地进行反复试验,今将试验、工作过程介绍如下:第一次试验用剂为硫酸40%水60%的溶液,选三株树连续三天试验的结果为:(1)出油情况,试验树在未试验前每天每株最高出油二两,最低出油五 According to Huiyang District Forestry Department introduced the peace Rosin plant using sulfuric acid to cut fat advanced experience, Guangdong Yihe rosin plant in November 58 to send Comrade Luo Fusheng to Yixi commune thirteen batches of field trials, the test, the work process is as follows : The first test agent is sulfuric acid 40% water 60% of the solution, the three trees were selected for three consecutive days the test results are: (1) the oil situation, the test tree before the test every day before the highest oil two two The minimum oil five