橡胶在国民经济和国防建设上有着重要的地位。解放后,我国的橡胶种植事业有了很大的发展,50年代末,开展了橡胶微量元素营养的研究,对提高橡胶的产量起了一定的作用。近年来,国内外应用乙烯利来处理橡胶树,可以提高产胶量。但是,也产生了一些副作用,如增加了橡胶树的死皮率,使排胶线内缩等。那么,怎样才能做到在使用乙烯利时既能提高橡胶树的产胶量,又可减少它的副作用呢? 1975—1977年,我们开展了钼肥与乙烯利混合施用对巴西橡胶树的影响的试验研究工作,结果证明,这样做既能使橡胶显著增 Rubber plays an important role in national economy and national defense construction. After liberation, China’s rubber plantation has made great progress. In the late 1950s, the study on the nutrition of rubber trace elements played a role in raising the yield of rubber. In recent years, the application of ethephon at home and abroad to deal with rubber trees, can increase the amount of plastic production. However, some side effects have also been produced, such as increasing the dead skin ratio of the rubber tree and shrinking the drainage line. So, how can we improve the yield of rubber tree while using ethephon and reduce its side effects? From 1975 to 1977, we carried out the experiment on the effect of molybdenum fertilizer and ethephon on the rubber tree in Brazil Research work, the results show that this will not only make the rubber significantly increased