摘要
为探索桉树高效栽培技术,进行了不同坡向、坡位、除草方式及施肥试验。试验表明,坡向对生长影响不显著,而坡位间生长差异显著,生长量是下坡>中坡>上坡;采用化学除草对早期生长促进作用大于人工除草,而后期两者差异不大,但抚育成本至少省一半以上;基肥对幼林生长促进作用差异大,早期桉树(1.5年生时)是当地生产的册亨桉树专用复合肥f1最好,后期(5年生)产量是f2>f3>f1>f4,f2是有机复合肥,肥效持续性好,后期生长逐渐加快,赶上并超过其它肥料。此外,试验还显示,如果造林不施硼肥则影响养分的吸收和幼林生长。
Large area eucalyptus planted in dry - hot valleys began in recent years. To explore the highly five cultivation technology, the influence of slope aspect, slope position, weeding and fertilizing on eucalyptus effee - was implemented. The result shown that the effect of slope aspect on growth was no significant, while there was a significant difference between dope positions. The impact of slope positions on growth from high to low were down hill 〉 middle hill 〉 uphill. The action of Chemical weed control on early growth was greater that than the artificial weeding, and later both difference was not big, but nurturing cost at least saved half above. The effect of base fertil- izer on young forest growth difference was big. Special compound fertilizer of eucalyptus fl produced at Ceheng coun- try early could accelerate eucalyptus growth （ 1.5 a）, but （5 a） four kinds of special compound fertilizer on late growth ranked from t＂2, f3, fl to f4. Organic compound fertilizer t2 characterized by long and slow fertilizer efficiency facilitated later growth gradually, and then catch up with and surpassed other fertilizers. In addition, the result also indicated that afforestation without boron fertilizer influenced the absorption of nutrients and growth of young forest.
出处
《贵州林业科技》
2013年第3期32-37,共6页
Guizhou Forestry Science and Technology
基金
中央级基公益性科研究院所基本科研究项目(RITFYWZX200906)
贵州省"十五"农业与社会发展科技计划重点攻关项目(黔科合(2004)NGZ001)
贵州省基金项目(黔科合J字[2007]2071号)
关键词
干热河谷
桉树
培育技术
Arid valleys, Eucalyptus, Silvicuhural Practices
