论文部分内容阅读
前言母生是海南岛主要速生特类用材树种之一。解放后,在党的正确领导下,各地营造了大面积母生人工林。目前,5—6年生以上的幼林,高达5米,胸径6厘米,已成片郁闭成林。但近年来,在育苗和幼林生长期,都遭受了母生木虱(学名待定)不同程度的为害,严重地影响了母生苗木和幼林的生长。因此,及早设法防治,保证幼林的正常生长,从而满足国家建设对木材的日益需要,有着极其重要的意义。同时,由于过去国内进行这方面工作甚少,缺乏有关资料。所以,在1964年—1965年期
Foreword Motherhood is one of the major fast-growing special timber species in Hainan Island. After the liberation, under the correct leadership of the party, large-area mother plantations have been created around the country. At present, younger than 5-6 years of age, up to 5 meters, diameter 6 cm, has become a canopy forest. In recent years, however, all of them have suffered from different degrees of virulence of psyllids in the nursery and young plantation stages, seriously affecting the growth of the mother and young seedlings. Therefore, it is extremely important to try to prevent and control as soon as possible and ensure the normal growth of young forests so as to meet the increasing needs for national construction for timber. At the same time, due to the paucity of domestic efforts in this respect in the past, the relevant information is lacking. So, in the 1964-1965 period