东北林业大学学报
東北林業大學學報
동북임업대학학보
JOURNAL OF NORTHEAST FORESTRY UNIVERSITY
2010年
1期
56-59
,共4页
黄承标%冯昌林%李保平%邓振海%罗玉婷%蓝玉甜
黃承標%馮昌林%李保平%鄧振海%囉玉婷%藍玉甜
황승표%풍창림%리보평%산진해%라옥정%람옥첨
兰科植物分布区%土壤物理性质%土壤化学性质%广西雅长兰科植物自然保护区
蘭科植物分佈區%土壤物理性質%土壤化學性質%廣西雅長蘭科植物自然保護區
란과식물분포구%토양물이성질%토양화학성질%엄서아장란과식물자연보호구
Arethusa distribution region%Soil physical and chemical properties%Yachang nature reserve
为了更好地繁殖和保存兰科植物的优良基因,在广西雅长兰科植物自然保护区,按兰科植物的水平分布及垂直分布状况,选择代表性的地段设置样地22个,分别取样测定土壤(0～20cm)理化性质.结果表明,土壤密度为0.530～1.012g·cm~(-3),平均值为0.794g·cm~(-3);土壤总孔隙度为39.7%～62.9%,平均值为54.1%;土壤通气度为16.7%～34.4%,平均值为25.1%.土壤pH值为5.33～8.03;有机质质量分数为30.55～98.32g·kg~(-1);全氮及水解氮质量分数分别为1.46～7.38g·kg~(-1)和191.40～713.40mg·kg~(-1);全磷及有效磷质量分数分别为0.72～1.77g·kg~(-1)和0.80～6.30mg·kg~(-1);全钾及速效钾质量分数分别为1.32～9.88g·kg~(-1)和25.30～99.80mg·kg~(-1).从而充分表明,广西雅长兰科植物分布区土壤较疏松、通气性及透气性能良好.土壤中氮、磷、钾主要养分质量分数丰富.
為瞭更好地繁殖和保存蘭科植物的優良基因,在廣西雅長蘭科植物自然保護區,按蘭科植物的水平分佈及垂直分佈狀況,選擇代錶性的地段設置樣地22箇,分彆取樣測定土壤(0～20cm)理化性質.結果錶明,土壤密度為0.530～1.012g·cm~(-3),平均值為0.794g·cm~(-3);土壤總孔隙度為39.7%～62.9%,平均值為54.1%;土壤通氣度為16.7%～34.4%,平均值為25.1%.土壤pH值為5.33～8.03;有機質質量分數為30.55～98.32g·kg~(-1);全氮及水解氮質量分數分彆為1.46～7.38g·kg~(-1)和191.40～713.40mg·kg~(-1);全燐及有效燐質量分數分彆為0.72～1.77g·kg~(-1)和0.80～6.30mg·kg~(-1);全鉀及速效鉀質量分數分彆為1.32～9.88g·kg~(-1)和25.30～99.80mg·kg~(-1).從而充分錶明,廣西雅長蘭科植物分佈區土壤較疏鬆、通氣性及透氣性能良好.土壤中氮、燐、鉀主要養分質量分數豐富.
위료경호지번식화보존란과식물적우량기인,재엄서아장란과식물자연보호구,안란과식물적수평분포급수직분포상황,선택대표성적지단설치양지22개,분별취양측정토양(0～20cm)이화성질.결과표명,토양밀도위0.530～1.012g·cm~(-3),평균치위0.794g·cm~(-3);토양총공극도위39.7%～62.9%,평균치위54.1%;토양통기도위16.7%～34.4%,평균치위25.1%.토양pH치위5.33～8.03;유궤질질량분수위30.55～98.32g·kg~(-1);전담급수해담질량분수분별위1.46～7.38g·kg~(-1)화191.40～713.40mg·kg~(-1);전린급유효린질량분수분별위0.72～1.77g·kg~(-1)화0.80～6.30mg·kg~(-1);전갑급속효갑질량분수분별위1.32～9.88g·kg~(-1)화25.30～99.80mg·kg~(-1).종이충분표명,엄서아장란과식물분포구토양교소송、통기성급투기성능량호.토양중담、린、갑주요양분질량분수봉부.
Twenty two typical sample plots were set up in Yachang Nature Reserve according to the horizontal and vertical distribution of arethusa in order to breed and preserve the fine genes of arethusa (Orchidaceae). Physical and chemical properties of the soil in the layer of 0～20cm were determined. Results showed that soil bulk density ranged from 0.530 to 1.012g·cm~(-3), with an average value of 0.794g·cm~(-3); soil total porosity changed between 39.7% and 62.9%, with an average value of 54.1%; soil aeration degrees varied from 16.7% to 34.4%, with an average value of 25.1%. Soil pH value ranged from 5.33 to 8.03, organic matter content from 30.55 to 98.32g·kg~(-1), contents of total nitrogen and hydrolyzed nitrogen from 1.46 to 7.38g·kg~(-1) and 191.40 to 713.40mg·kg~(-1), contents of total phosphorus and available phosphorus from 0.72 to 1.77g·kg~(-1) and 0.80 to 6.30mg·kg~(-1), and contents of total kalium and available kalium from 1.32 to 9.88g·kg~(-1) and 25.30 to 99.80mg·kg~(-1), respectively. The soil in the distribution region of arethusa in Yachang, Guangxi is better in infiltration characteristics and rich in nutrient contents.
