百色农试站4月上旬起陆续进行防治叶稻瘟的11种试验(包括抗生素、化学药、土农药),试验地巳感染叶稻瘟10%左右,到4月20日止,先后两次选点抽查,结果以下列几种土农药较好。(一)苦栋树皮液:以苦栋树皮60斤,用刀切碎捣烂,放到150斤清水中煮沸后一小时,过滤即得 Baise pilot station in early April from the beginning of leaf blight prevention and control of 11 kinds of tests (including antibiotics, chemical drugs, soil pesticides), the test has been infected with leaf blast about 10% until April 20, twice Spot checks, the results to the following types of soil pesticides better. (A) bitter Dong bark solution: hard to bark 60 pounds, chopped smashed with a knife, put 150 kg of water in an hour after boiling, that is filtered