亚热带水土保持
亞熱帶水土保持
아열대수토보지
Subtropical Soil and Water Conservation
2015年
3期
48-50,56
,共4页
麻竹%地上部分%营养元素%积累%分配
痳竹%地上部分%營養元素%積纍%分配
마죽%지상부분%영양원소%적루%분배
Dendrocalamus latiflorus%aerial part organs%nutrients%accumulation%distribution
麻竹( Dendrocalamus latiflorus)是优良的笋材两用丛生竹种,研究立竹器官营养元素的吸收、积累和分配,可为麻竹林的土壤养分管理提供参考。通过对麻竹2年生立竹叶、枝、秆的氮( N)、磷( P)、钾( K)、钙( Ca)、镁( Mg)、铁( Fe)、锰( Mn)、锌( Zn)和铜( Cu)等9种营养元素含量进行测定分析,结果表明:试验麻竹林2年生立竹地上部分器官营养元素含量除Zn为枝>叶>秆外,其他8种营养元素含量均为叶>枝>秆,营养元素含量大小均为N>K>P>Ca>Mg>Mn>Fe>Zn>Cu。2年生立竹地上部分9种营养元素的积累量为249.13 kg/hm2,枝(106.25 kg/hm2)>秆(82.01kg/hm2)>叶(60.87 kg/hm2),其中以N素的积累量最大,所占比例达61.0%;9种营养元素含量在地上部分器官中的分配比例为枝(37.0%)>叶(35.9%)>秆(27.1%)。建议在麻竹林经营过程需适当增施氮肥,促进竹林生长和效益产出。
痳竹( Dendrocalamus latiflorus)是優良的筍材兩用叢生竹種,研究立竹器官營養元素的吸收、積纍和分配,可為痳竹林的土壤養分管理提供參攷。通過對痳竹2年生立竹葉、枝、稈的氮( N)、燐( P)、鉀( K)、鈣( Ca)、鎂( Mg)、鐵( Fe)、錳( Mn)、鋅( Zn)和銅( Cu)等9種營養元素含量進行測定分析,結果錶明:試驗痳竹林2年生立竹地上部分器官營養元素含量除Zn為枝>葉>稈外,其他8種營養元素含量均為葉>枝>稈,營養元素含量大小均為N>K>P>Ca>Mg>Mn>Fe>Zn>Cu。2年生立竹地上部分9種營養元素的積纍量為249.13 kg/hm2,枝(106.25 kg/hm2)>稈(82.01kg/hm2)>葉(60.87 kg/hm2),其中以N素的積纍量最大,所佔比例達61.0%;9種營養元素含量在地上部分器官中的分配比例為枝(37.0%)>葉(35.9%)>稈(27.1%)。建議在痳竹林經營過程需適噹增施氮肥,促進竹林生長和效益產齣。
마죽( Dendrocalamus latiflorus)시우량적순재량용총생죽충,연구립죽기관영양원소적흡수、적루화분배,가위마죽림적토양양분관리제공삼고。통과대마죽2년생립죽협、지、간적담( N)、린( P)、갑( K)、개( Ca)、미( Mg)、철( Fe)、맹( Mn)、자( Zn)화동( Cu)등9충영양원소함량진행측정분석,결과표명:시험마죽림2년생립죽지상부분기관영양원소함량제Zn위지>협>간외,기타8충영양원소함량균위협>지>간,영양원소함량대소균위N>K>P>Ca>Mg>Mn>Fe>Zn>Cu。2년생립죽지상부분9충영양원소적적루량위249.13 kg/hm2,지(106.25 kg/hm2)>간(82.01kg/hm2)>협(60.87 kg/hm2),기중이N소적적루량최대,소점비례체61.0%;9충영양원소함량재지상부분기관중적분배비례위지(37.0%)>협(35.9%)>간(27.1%)。건의재마죽림경영과정수괄당증시담비,촉진죽림생장화효익산출。
Dendrocalamus latiflorus is one of the important dual-use clumping bamboo materials, the study of the absorption, accumulation and distribution of nutrients by standing bamboo organs can provide the basis for soil nutrient management in the D.latiflorus woodland.It is determined and analyzed the contents of nine nutrients in the leaves, branches and stalks of two-year-old Dendrocalamus latiflorus including N, P, K, Ca, Mg, Fe, Mn, Zn and Cu. The results showed that the contents of nutrient in different aerial part organs were ranked as leaves>branches>stalks except Zn of branches>leaves>stalks, the contents of nutrient were ranked as N>K>P>Ca>Mg>Mn>Fe>Zn>Cu in three organs.The total accumulated contents of nine nutrients were 249.13 kg/hm2 , of which, the con-tents in leaves, branches and stalks were 106.25 kg/hm2、82.01kg/hm2、60.87 kg/hm2 respectively.The accumula-ted content of N was ranked the top, reaching 61.0%of total contents.The allocation percentage of nine kinds of nu-trients in different organs was branches (37.0%)>leaf (35.9%)>stalk (27.1%).Therefore, more application of N fertilizer during the planting of Dendrocalamus latiflorus will promote the growth and benefit of bamboo land.