80年代以来 ,刺槐在江苏沿海造林中的比重逐年下降 ,目前已经不足 10 %。造成下降的原因是多方面的 ,但种质资源退化、生长量下降乃是主要原因。随着我国天然林保护工程的启动 ,国内硬质材的供应将趋紧 ,价格将趋升。通过引进良种和丰产栽培技术 ,提高刺槐林分的生产力来提高刺槐在沿海造林树种中的比重不但是必要的 ,而且是可行的 Since the 1980s, the proportion of acacia locust in the coastal afforestation in Jiangsu has been declining year by year, and now it has less than 10%. The reasons for the decline are many, but the main reason is the deterioration of germplasm resources and the decline in growth. With the start of China’s natural forest protection project, the domestic supply of hard materials will be tightened, the price will rise. It is not only necessary but also feasible to improve the productivity of Robinia pseudoacacia by improving the productivity of Robinia pseudoacacia forest