华山松种子园花粉管理的技术研究

从1986年起,我们对平坝华山松幼龄林种子园进行开花习性,人工辅助混合授粉和施肥促进开花的研究。研究结果表明,幼龄林种子园具有一定的结实能力,开雌花株数达45.5%。但是雌球花败育率高(73%),有雄花株少(12%),着果率低(59%)。通过人工辅助混合授粉,可提高着果率16.7%,施肥可增加雄球花花数1倍以上。

A Study on Technique of Pollen Controlling in Seed Breeding Garden of Pinus Armandii

Since 1986, We have researchd the flowering habit of pinus armandii, with artificial supplementary pollination and fertilization in the young seed breeding garden of pinus armandii in Pingba county, Guizhou province. The results showed that the young seed breeding garden had a certain ability of fruit bearing, and the number of female flowers accounted for 45.5%. However, the abortion rate of female flowers was 73%, the number of tree with male flowers was only 12%, and the fruit-bearing rate 59%. The fruit beering rate can be increased by 16.7% through the artificial supplementary pollination, and fertilization can be more than doule the number of male flowers.