湖南省杉木种子园结实现状及发展对策

The status and development countermeasures of seed setting of Cunninghamia lanceolata seed orchard in Hunan Province

从分析湖南现有杉木初级、1.5代、2代种子园结实量现状入手,分析了不同世代的种子园结实量低的原因。初级种子园主要是林龄大,树体高大,本身结实量少,加上树体大,可采种子非常少;1.5代种子园,郁闭度大,树枝枯死,造成结实量少;2代种子园管理粗放,种子产量不高。根据多年对种子园结实量研究,提出了提高种子园结实量的主要技术措施。针对现有杉木种子园的缺陷,对杉木3代种子园建园提出了发展对策。

The reason of low seed yield in different generation were analyzed with the 1st generation,1.5 generation and 2nd generation Cunninghamia lanceolata seed orchard in Hunan Province.The reason of low seed yield in 1st generation seed orchard is long age tree,higher tree height,low seed setting single plant.The reason of low seed yield in 1.5 generation seed orchard is large canopy and dead branches.The reason of low seed yield in 2nd generation seed orchard is extensive management.According to the seed yield of seed orchard status,the technological method was pointed out.The development countermeasure of 3rd generation C.lanceolata seed orchard were poicted out with the existing problem.