后，添加生物炭可顯著提高土壤 pH 及銨態(tài)氮、硝態(tài)氮、有效磷和速效鉀等含量，從而促進(jìn)青錢柳葉片葉綠素a、葉綠素 b 和類胡蘿卜素含量的提高。與生物炭類型相比，生物炭添加量對土壤化學(xué)指標(biāo)影響更為顯著( P< 0.05)。且添加 25% 青錢柳炭可顯著提高土壤 pH ，較對照(CK)提高 32.1% ；添加 25% 稻殼炭的土壤有效磷和速效鉀含量（質(zhì)量分?jǐn)?shù)）較CK分別提高 145.3% 和 250.0% 。不同種類及添加量的生物炭對青錢柳苗高、地徑、生物量均有顯著影響( P<0.05 ，其中以添加 5% 青錢柳炭對青錢柳葉、莖、根及總生物量的處理效果最佳，分別比CK提高了 55.6%.47.6%.43.0% 和 47.0% 。相關(guān)性分析表明，葉片光合色素含量與苗高、地徑的凈增長量均呈顯著正相關(guān)( P<0.05) ，而葉片光合色素均與土壤硝態(tài)氮含量呈極顯著正相關(guān)（ P<0.01? ，土壤速效鉀含量僅與葉片類胡蘿卜素含量呈顯著正相關(guān)（ .P<0.05) ?！窘Y(jié)論】適量添加生物炭能有效提升土壤肥力并促進(jìn)青錢柳生長，在本研究中以施用體積比 5% 的青錢柳炭（即質(zhì)量比約為 1.0% )對青錢柳生物量生產(chǎn)促進(jìn)作用最顯著。-龍?jiān)雌诳W(wǎng)" />

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3種生物炭及其用量對土壤化學(xué)性質(zhì)及青錢柳苗生長的影響

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中圖分類號：S723 文獻(xiàn)標(biāo)志碼：A 文章編號：1000-2006（2025）04-0137-08

Abstract：【Objective】Cyclocaryapaliurus isamultifunctional treespecies.Thisstudy investigated theimpactsof biochar types and their adition doses on soil chemical properties，leaf photosynthetic pigment content，and growth of c paliurus seedlings，aiming to provide a scientific basis for biochar application in future C . paliurus plantations.【Method】 A two-factor randomized block experimental design was employed to investigatethe effectsof three biochar types（ C paliurus biochar，straw biochar，and bamboo biochar）and three application rates （ 5% ， 15% and 25% V/V， equivalent to 1.0% ， 3.5% ，and 6.5% m/m）on soil chemical properties，seedling growth，and leaf photosynthetic pigment content through apot experiment.【Result】After2OO daysof treatment，biochar applicationsignificantlyincreased soil pH ammoniumnitrogen，nitratenitrogen，availablephosphorus，andavailablepotassium levels，whilealsoenhancing chlorophyll a，chlorophyllb，and carotenoid contents in C .paliurus leaves.Application rate had a more pronounced effect on soil chemical indices than biochar type （ P<0.05 ）. Notably，adding 25% C. paliurus biochar increased soil pH by 32.1% ，and 25% strawbiocharsignificantlyelevated availablephosphorusand potassiumlevelsby 145.3% and 250.0% ，respectively，compared to thecontrol.Biochar application also significantly influenced seedling growth and biomass production（ P<0.05 ），withthe 5% C ·paliurus biochar treatment showing the most notable promotionin biomass production.Compared to the control，biomass in leaves，stems，roots，and total increased by 55.6% ， 47.6% ， 43.0% ，and 47.0% ，respectively，in the 5% c .paliurus biochar treatment.Correlation analysis revealed that seedling heightanddiametergrowth weresignificantlypositively corelatedwithleaf photosyntheticpigmentcontents. Additionally，all photosyntheticpigmentsweresignificantlyandpositivelycorrelatedwithsoil nitratenitrogen（ P< 0.01），while only soil available potassium showed a significant correlation with carotenoid content （ P<0.05 ） 【Conclusion】Appropriate biochar application effectively enhances soil fertility and promotes C . paliurus seedling growth. Among treatments，the 5% C . paliurus biochar application proved optimal for maximizing biomass production.

Keywords：Cyclocarya paliurus；biochar； soil pH ； soil nutrient；photosynthetic pigment；biomass production

青錢柳（Cyclocaryapaliurus）系胡桃科青錢柳屬，為我國特有的單種屬植物。（剩余12871字）

目錄
monitor