| 摘要: |
| 利用广东省湿加松良种选育协作组研制的14个优良杂种家系的扦插苗木在广东省台山市红岭种子园内营建试验示范林1块，面积7hm2，利用优良杂种家系的混合扦插苗木在广东省台山市赤溪镇营建丰产林1片120hm2。试验示范林5.5年生时的数据表明，优良家系扦插苗木的树高、胸径、材积生长可达到6.69m、11.31cm、0.03603m3，其材积生长比作为对照的湿地松、洪都拉斯加勒比松分别大136.59%、15.49%；3.5年生的丰产林的平均树高、胸径、材积分别为3.50m、5.62cm、0.0054m3，材积生长比作为对照的湿地松大350%。该结果充分显示了湿加松优良家系的生长优势，说明湿加松可在广东中南部地区通过扦插扩繁、大量推广。 |
| 关键词: 湿加松，湿地松，加勒比松，丰产林，杂种优势 |
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| Evaluation on Growth of cutting stock populations of Slash Pine×Caribbean Pine F1 Hybrids |
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Li Fuming
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| Abstract: |
| One research and demonstration plantation(RDP) and one high-yield plantation(HYP) were established in Taishan, Guangdong (22°11′N ,112°49′E). The RDP, which was 7 ha, was established with cuttings of 14 better hybrid families of slash pine ( Pinus elliottii var. elliottii) ×caribbean pine ( P. caribaea var. hondurensis). The HYP was established with the mixed cuttings of better hybrid families, the area was 120 ha. Data from the RDP at age 5.5 showed that, the average height, diameter at breast height(DBH), individual volume(VOL) of the hybrid families were 6.69m、11.31cm、0.03603m3, respectively. The realized gains were 136.59%、15.49% comparing to slash pine and Caribbean pine, for VOL., The average height, DBH, VOL of the 3.5-year old HYP were 3.50m、5.62cm、0.0054m3, respectively. And its volume was 4.5 times as bigger as slash pine. It was conclude that cutting stocks of slash pine×caribben pine F1 hybrids have greater growth superiority, and could be fully employed in the middle- and south-area of Guangdong province. |
| Key words: slash pine×caribbean pine hybrid slash pine Caribbean pine high yield plantation growth superiority |
