杉木种子园早期高产关键技术研究

Study on Key Technique for High Yield at First Period in Chinese Fir Seed 0rchard

经近10年的试验研究表明:1.选择早实高产无性系,增加它在种子园的无性系比例。2.提高正冠率,加强早期密度。3.建立花粉收集区,做好人工辅助授粉。以上三点是关键,由此在丰产区12年生杉木种子园亩产种子11.10kg,7年生为亩产7.38kg。

Ten years study on key technique in Chinese fir (Cunninghamia lanceolata)seed orchard resulted that 11.10.kg/mu seed could be collected in 12-year Chinese. fir, 7.38kg/mu in 7-year tree by the methods as 1. select high yield and early fruit clones and incr-ease its proportion in seed orchard. 2. raise centre crown percent and early density.3. establish pollin collecting region, make some artificial pollination.