不同施肥措施对西南桦幼林生长的影响  

Effect of Different Fertilization Treatments on Sapling Growth of Betula alnoides

作　　者：郑海水[1] 杨斌[2] 傅强 刘庆云 姜远标 

机构地区：[1]中国林业科学研究院热带林业研究所,广东广州510520 [2]云南省林业科学院,云南昆明650204 [3]普洱市林业研究所,云南普洱665000

出　　处：《西部林业科学》2007年第3期1-6,共6页Journal of West China Forestry Science

摘　　要：以林地采取施用基肥与追肥相结合的方式,连续2次施用不同肥料（CK、N、P、K、NP、NK、KP、NPK）对西南桦幼林期林木生长的影响进行了试验,其试验结果表明：施用不同肥料对西南桦幼林（3年生）径、高、材积生长有显著影响。经对不同施肥处理的效果作比较,施NP肥的效果最好,其西南桦幼林材积比其他施肥处理高17.8%-138.9%;其次是施NPK处理,其幼林材积比施NP处理低15.1%,比其他施肥处理高10.4%-102.8%;再次是施NK处理,其生长量比施NP和施NPK处理低14.2%-23.1%,比其余5种施肥处理高1.7%-83.7%,施N与施NK处理的生长差异小,两者差异仅1.7%;生长最差是施KP处理,其生长量比不施肥的CK处理低7.2%,CK比施P处理低11.1%,施P处理又比施K处理低14.7%。由此得出,西南桦幼林林地以施用NP复合肥为好,两者采取1：1的比例比较恰当;用常用的NPK复合肥和N肥也能起到较好的结果。但忌K肥与P肥结合使用。The fertilization experiment including base fertilizer and top fertilizer was conducted on Betula alnoides sapling. The tested treatments are CK, N, P, K, NP, NK, KP, NPK. The experimental results show different fertilization treatments have significant effects on growth of diameter, height and volume. The ffect of NP is the best among all the treatments, the volume growth is 17.8 % - 138.9 % higher than other treatments. Next come NPK, the volume growth is 15. 1% lower than that of NP, still 10. 4 % - 102.8 % higher than other treatments. Follows NK, the volume growth is 14.2 % - 23. 1% lower than NP and NPK, however 1.7 % - 83.7 %. There is little difference between N and NK. The worst performance is KP, the growth increment is 7.2 % lower than CK. The volume growth of CK is 11. 1% lower than P, and P is 14.7 % lower than K. It can be summarized from the experimental results that in the sapling stage, it is better to apply NP, with the proportion of 1 ： 1. NPK and N also have promising effects. It is not suggested to apply K with P.

关 键 词：西南桦 施肥措施 幼林生长 

分 类 号：S792.4[农业科学—林木遗传育种]