摘要
对雷竹Phyllostachys violascens 'Prevernalis'林开展穴施缓释肥和沟施缓释肥实验,以常规撒施复合肥为对照,通过对雷竹林土壤养分、竹株(包括地上茎、竹枝、竹叶、竹鞭和竹根)生物量干质量和植物组织养分的分析,研究缓释肥及其施用方式对雷竹林肥料吸收利用的影响.结果表明:不同施肥处理下,雷竹林土壤 pH 均有不同程度的降低,其中以常规施肥处理下降最多,达到 0.52 个pH单位;土壤碱解氮、速效磷、速效钾的积累量由大到小均为常规施肥处理>穴施缓释肥处理≈沟施缓释肥处理,常规施肥处理中土壤碱解氮、速效磷和速效钾积累较施肥前分别增加 26.40％、20.74％和 3.98％;竹株总生物量干质量为常规施肥(985.37 g)<穴施缓释肥(1 276.49 g)≈沟施缓释肥(1 119.85 g);竹株全氮、全磷、全钾含量表现为常规施肥<穴施缓释肥≈沟施缓释肥;与常规施肥相比,穴施和沟施缓释肥促进了竹株对氮、磷、钾元素的吸收;综合肥料利用效果,穴施和沟施缓释肥处理显著优于常规施肥,穴施对雷竹地上部分养分吸收利用的促进作用最为显著,沟施对雷竹地下部分养分吸收利用的促进作用最为显著.
Abstract
In Phyllostachys praecox 'Prevernalis' stand in Hangzhou,Zhejiang province,9 standard plots were established.In November 2017 and November 2019,soil of 0-40cm were sampled for determination of physiochemical properties.In 2018,experiments were conducted on hole(HSF)and furrow(FSF)application of slow release fertilizer in stand with compound fertilizer as control(CK).In January 2019,3 new bamboos of each plots were selected for detection of biomass.The results showed that under different treatments,soil pH decreased in each plot,especially in the control,about 0.52.The accumulation of soil available N,P,and K were as follows:CK>HSF≈FSF,and the accumulation of soil available N,P,and K in CK increased by 26.40％,20.74％,and 3.98％.Dry biomass of bamboo had an opposite trend,CK(985.37 g)<HSF(1276.49 g)≈FSF(1 119.85 g).The contents of N,P,and K,and the dry biomass of plants had the same trend as the dry biomass of plants,CF<HSF≈FSF.Compared with CK,HSF and FSF promoted the absorption of N,P,and K.The experiment demonstrated that HSF and FSF were significantly better than CK on the absorption and utilization of fertilizer,especially HSF had the most significant effect on the absorption and utilization of above ground part,and FSF had the most significant effect of underground part of Ph.praecox 'Prevernalis'.
基金项目
杭州市科技发展计划项目(20180432B27)
中央财政林业科技推广示范资金项目([2023]TS07号)
维普
万方数据