袋控施肥对杉木生长及土壤养分的影响

发布时间：2018-03-10 17:27

本文选题：杉木　切入点：袋控施肥　出处：《森林与环境学报》2017年02期 　论文类型：期刊论文

【摘要】：通过3 a的杉木施肥试验,研究了不同施肥方式对杉木树高、胸径和蓄积量以及土壤pH值、有机质和土壤养分含量的影响。结果表明:3 a试验后,最佳处理为A处理(6孔袋控处理),树高(8.46 m)、胸径(8.96 cm)和蓄积量(98.16 m~3·hm~(-2)),分别比CK提高5.75%、降低0.56%、提高19.13%,分别比B(8孔袋控处理)、C(10孔袋控处理)、D(传统处理)处理的提高0.24%~5.75%、2.63%~5.78%和17.75%~18.71%。0~20 cm和20~40 cm的土层土壤pH值均以A处理最高(4.6),0~20 cm土层的土壤有机质含量以B处理最高(37.77 g·kg~(-1)),A处理的土壤有机质含量与B处理相差不大,20~40 cm土层的土壤有机质含量以A处理最高(25.75 g·kg~(-1))。施肥3 a后,土壤全氮、全磷、全钾、碱解氮和速效钾含量总体上以A处理最高。各处理0~20 cm土层的速效钾含量较试验前降低,全氮、全磷、全钾和碱解氮在0~20 cm和20~40 cm土层的含量均比试验前增加。相比常规施肥,袋控施肥对提高杉木早期生长量和林地土壤肥力上的效果较好,其中又以A处理效果最好。
[Abstract]:The effects of different fertilization methods on the height, diameter and volume of Chinese fir (Cunninghamia lanceolata), soil pH value, organic matter and soil nutrient content were studied by fertilization experiment for 3 years. The best treatments were as follows: a treatment with 6 holes, tree height of 8.46 mm, DBH of 8.96 cm) and accumulative capacity of 98.16 mm3 路hm-1 -2, respectively, which were 5.75% higher, 0.56 lower, 19.13% higher than CK, 0.24% and 5.75% higher than that of BH8, respectively, and 5.78% and 5.78% higher than that of BH8, respectively, in C10 hole bag control treatment, C10 hole bag control treatment (traditional treatment). The highest soil organic matter content of treatment B was 37.77 g 路kg ~ (-1) 路kg ~ (-1) N ~ (-1) C ~ (-1) and B treatment had a little difference between B treatment and B treatment in soil organic matter content of 20 ~ 40 cm soil layer with A treatment as the highest soil organic matter content in the soil layer of 18.71cm and 20 ~ 40cm. A treatment had the highest value of 25.75 g 路kg ~ (-1) ~ (-1). After 3 years of fertilization, The contents of total nitrogen, total phosphorus, total potassium, alkali-hydrolyzed nitrogen and available potassium were the highest in A treatment, and the available potassium content in 0 ~ 20 cm soil layer of each treatment was lower than that before the experiment. The contents of total potassium and alkali-hydrolyzed nitrogen in 0 ~ 20 cm and 20 ~ 40 cm soil layer were higher than those before the experiment. Compared with conventional fertilization, bagging fertilization had a better effect on improving the early growth of Chinese fir and soil fertility of forest land, and A treatment was the best.
【作者单位】：福建省洋口国有林场;
【基金】：福建省林业科研项目(闽林科2012-002)
【分类号】：S714.8;S791.27

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