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前言湿地松于1948年引入武昌栽植,至1960年开始有少数植株开花,但结果甚少,种子全为空粒。1963年收到球果30余个,获得种子300多粒,而发育正常的种子仅有4粒,1964年春对林分进行了疏伐疏移,增加了光照,并随着树令的增大,结果量逐年有所增多,但出籽率仍然很低(0.8～2.5％),种子不孕率也很高(占30—40％),据资料介
Introduction Psoriasis was first introduced into Wuchang in 1948, and a few plants began to bloom in 1960, but little result was achieved. All the seeds were empty grains. In 1963, more than 30 cones were obtained, more than 300 seeds were obtained, and only 4 seeds were normal in development. In the spring of 1964, the forest was thinned and sparse, increasing the light intensity. With the increase of trees, , The amount of results increased year by year, but the seedling rate is still low (0.8 ~ 2.5%), the seed infertility rate is also high (30-40%), according to data