六月的海南，酷暑难挡。清晨，林荫道上一个纯朴敦厚的中年人匆忙地骑着自行车，向橡胶试验区骑去。他就是杨昆生，山荣农场的高级工程师，中国热带作物学会会员，１９９７年“中华农业科教基金农技推广奖”获得者。他总是一副朴朴实实的样子，不了解他的人，谁也不会想到... Hainan in June, the heat can not stop. In the early morning, a middle-aged man on the boulevard hurriedly rides a bicycle and rides to the rubber test area. He is Yang Kun-sheng, a senior engineer at Shanrong Farm, a member of China Tropical Crops Society, and a recipient of the “Agricultural Science and Technology Education Fund of Agricultural Technology Promotion Award” in 1997. He is always a simple look, no one knows him, no one can think of it ...