不同氣候與施肥條件下農(nóng)田土壤微生物生物量特征與容量分析
發(fā)布時(shí)間：2018-10-22 13:30
【摘要】：【目的】土壤微生物生物量是土壤生物肥力的重要指標(biāo),是土壤養(yǎng)分重要的周轉(zhuǎn)庫。探討不同氣候和施肥條件下土壤微生物生物量(生物量碳、氮)的特征及容量,對于深刻認(rèn)識土壤微生物生物量的影響因素及提高土壤生物肥力具有重要意義�！痉椒ā勘狙芯繌闹袊W(wǎng)、萬方和web of Science 3個(gè)文獻(xiàn)數(shù)據(jù)庫,以"土壤微生物生物量"、"中國農(nóng)田"和"長期施肥"為關(guān)鍵詞,共收集目標(biāo)文獻(xiàn)42篇,包括458組含土壤有機(jī)碳(SOC)與土壤微生物生物量碳(SMBC)和414組含土壤全氮(TN)與土壤微生物生物量氮(SMBN)的數(shù)據(jù)集,涵蓋了4種氣候下的2類施肥條件(施有機(jī)肥:單施或配施,+OM;不施有機(jī)肥:無肥和化肥,-OM)。土壤微生物熵(SMBC/SOC)和SMBN/TN的中值差異性均采用Kruskal-Wallis H單向顯著性檢驗(yàn)(P0.05),容量分析采用界限分析方法�！窘Y(jié)果】統(tǒng)計(jì)分析結(jié)果表明,不同施肥處理下,SMBC與SOC和SMBN與TN之間均存在顯著線性正相關(guān)關(guān)系(P0.01),長期施用有機(jī)肥條件下,土壤微生物生物量碳、氮對土壤有機(jī)碳和全氮增加的響應(yīng)系數(shù)分別為24.77和30.27,顯著高于化肥或不施肥條件(分別為19.88和19.86)(P0.05)。界限分析結(jié)果顯示,不同施肥措施下SMBC對SOC增加響應(yīng)的最大值為33.45—36.00,SMBN對TN的最大響應(yīng)系數(shù)為45.45—49.79,當(dāng)前條件下SMBC和SMBN還有37.99%和49.66%的提升空間。不同氣候條件下SMBC/SOC和SMBN/TN均存在顯著差異(P0.05),其中,中溫帶半干旱半濕潤區(qū)SMBC/SOC的中值最高為2.73%,其次為亞熱帶濕潤區(qū)(2.45%)和暖溫帶濕潤區(qū)(2.31%),中溫帶濕潤區(qū)最低為1.48%;SMBN/TN的中值大小順序?yàn)?暖溫帶濕潤區(qū)(4.72%)中溫帶半干旱半濕潤區(qū)(3.50%)亞熱帶濕潤區(qū)(2.99%)中溫帶濕潤區(qū)(1.80%)。不同施肥條件下SMBC/SOC和SMBN/TN的變化范圍分別為0.35%—6.50%和0.50%—9.72%,但其中值并無顯著差異(P0.05)。對于同一氣候條件不同施肥措施而言,僅在中溫帶濕潤區(qū),施有機(jī)肥處理對微生物量碳(氮)占總有機(jī)碳(氮)的比例有顯著影響(P0.05)。【結(jié)論】氣候?qū)ν寥牢⑸锷锪刻�、氮所占比例具有顯著影響,不同施肥模式雖然不能顯著改變微生物生物量碳、氮的比例,但有機(jī)肥的施用對微生物生物量碳、氮的提升效果顯著高于化肥或不施肥,該結(jié)果對于土壤生物肥力的調(diào)控有重要指導(dǎo)意義。
[Abstract]:Objective: soil microbial biomass is an important index of soil biological fertility and an important turnover pool of soil nutrients. The characteristics and capacity of soil microbial biomass (biomass carbon, nitrogen) under different climate and fertilization conditions were studied. It is of great significance to deeply understand the influencing factors of soil microbial biomass and to improve soil biological fertility. [methods] this study is based on the three literature databases of China, Wanfang and web of Science. Taking "soil microbial biomass", "Chinese farmland" and "long-term fertilization" as keywords, 42 articles were collected. There were 458 groups of soil organic carbon (SOC) and soil microbial biomass carbon (SMBC) and 414 groups of soil total nitrogen (TN) and soil microbial biomass nitrogen (SMBN) data sets. It covers two types of fertilization conditions under four climates (organic fertilizer: single or combined, OM; no organic fertilizer: no fertilizer and fertilizer,-OM).) The median differences of soil microbial entropy (SMBC/SOC) and SMBN/TN were tested by Kruskal-Wallis H one-way significance test (P0.05), and the capacity analysis was carried out by the method of boundary analysis. [results] the statistical analysis results showed that, Under different fertilization treatments, there was a significant linear positive correlation between SMBC and SOC and between SMBN and TN (P0.01). The response coefficients of nitrogen to soil organic carbon and total nitrogen were 24.77 and 30.27, respectively, which were significantly higher than those of fertilizer or no fertilizer (19.88 and 19.86 respectively) (P0.05). The results of limit analysis showed that the maximum response of SMBC to SOC under different fertilization measures was 33.45-36.00 and the maximum response coefficient to TN was 45.45-49.79, and SMBC and SMBN still had 37.99% and 49.66% lifting space under current conditions. There were significant differences between SMBC/SOC and SMBN/TN in different climatic conditions (P0.05). The median value of SMBC/SOC in the semi-arid and semi-humid zone of the middle temperate zone was the highest (2.73%), followed by the sub-tropical humid zone (2.45%) and the warm temperate zone (2.31%). The order of median value of the median value of SMBC/SOC was 1.48% (4.72%) in the warm temperate zone (4.72%) and the lowest in the middle temperate zone (2.31%). The wetted zone in the middle temperate zone (1.80%) was wetted in the subtropical zone (2.99%) and in the moist region (3.50%). The range of SMBC/SOC and SMBN/TN under different fertilization conditions were 0.35-6.50% and 0.50-9.72%, respectively, but there was no significant difference between them (P0.05). For different fertilization measures under the same climatic conditions, organic fertilizer treatment had a significant effect on the proportion of microbial biomass carbon (nitrogen) to total organic carbon (P 0.05) only in the middle temperate humid zone (P0.05). [conclusion] Climate affects soil microbial biomass carbon. Although the proportion of microbial biomass carbon and nitrogen could not be significantly changed by different fertilization modes, the effect of organic fertilizer application on microbial biomass carbon and nitrogen was significantly higher than that on fertilizer or no fertilizer. The results are of great significance for the regulation of soil biological fertility.
【作者單位】： 中國農(nóng)業(yè)科學(xué)院農(nóng)業(yè)資源與農(nóng)業(yè)區(qū)劃研究所/耕地培育技術(shù)國家工程實(shí)驗(yàn)室;武漢理工大學(xué);
【基金】：國家“十二五”國家科技支撐計(jì)劃項(xiàng)目(2014BAD14B02,2014BAD14B03) 國家公益性行業(yè)(農(nóng)業(yè))科研專項(xiàng)(201203030,201303126)
【分類號】：S154.3
本文編號：2287290
[Abstract]:Objective: soil microbial biomass is an important index of soil biological fertility and an important turnover pool of soil nutrients. The characteristics and capacity of soil microbial biomass (biomass carbon, nitrogen) under different climate and fertilization conditions were studied. It is of great significance to deeply understand the influencing factors of soil microbial biomass and to improve soil biological fertility. [methods] this study is based on the three literature databases of China, Wanfang and web of Science. Taking "soil microbial biomass", "Chinese farmland" and "long-term fertilization" as keywords, 42 articles were collected. There were 458 groups of soil organic carbon (SOC) and soil microbial biomass carbon (SMBC) and 414 groups of soil total nitrogen (TN) and soil microbial biomass nitrogen (SMBN) data sets. It covers two types of fertilization conditions under four climates (organic fertilizer: single or combined, OM; no organic fertilizer: no fertilizer and fertilizer,-OM).) The median differences of soil microbial entropy (SMBC/SOC) and SMBN/TN were tested by Kruskal-Wallis H one-way significance test (P0.05), and the capacity analysis was carried out by the method of boundary analysis. [results] the statistical analysis results showed that, Under different fertilization treatments, there was a significant linear positive correlation between SMBC and SOC and between SMBN and TN (P0.01). The response coefficients of nitrogen to soil organic carbon and total nitrogen were 24.77 and 30.27, respectively, which were significantly higher than those of fertilizer or no fertilizer (19.88 and 19.86 respectively) (P0.05). The results of limit analysis showed that the maximum response of SMBC to SOC under different fertilization measures was 33.45-36.00 and the maximum response coefficient to TN was 45.45-49.79, and SMBC and SMBN still had 37.99% and 49.66% lifting space under current conditions. There were significant differences between SMBC/SOC and SMBN/TN in different climatic conditions (P0.05). The median value of SMBC/SOC in the semi-arid and semi-humid zone of the middle temperate zone was the highest (2.73%), followed by the sub-tropical humid zone (2.45%) and the warm temperate zone (2.31%). The order of median value of the median value of SMBC/SOC was 1.48% (4.72%) in the warm temperate zone (4.72%) and the lowest in the middle temperate zone (2.31%). The wetted zone in the middle temperate zone (1.80%) was wetted in the subtropical zone (2.99%) and in the moist region (3.50%). The range of SMBC/SOC and SMBN/TN under different fertilization conditions were 0.35-6.50% and 0.50-9.72%, respectively, but there was no significant difference between them (P0.05). For different fertilization measures under the same climatic conditions, organic fertilizer treatment had a significant effect on the proportion of microbial biomass carbon (nitrogen) to total organic carbon (P 0.05) only in the middle temperate humid zone (P0.05). [conclusion] Climate affects soil microbial biomass carbon. Although the proportion of microbial biomass carbon and nitrogen could not be significantly changed by different fertilization modes, the effect of organic fertilizer application on microbial biomass carbon and nitrogen was significantly higher than that on fertilizer or no fertilizer. The results are of great significance for the regulation of soil biological fertility.
【作者單位】： 中國農(nóng)業(yè)科學(xué)院農(nóng)業(yè)資源與農(nóng)業(yè)區(qū)劃研究所/耕地培育技術(shù)國家工程實(shí)驗(yàn)室;武漢理工大學(xué);
【基金】：國家“十二五”國家科技支撐計(jì)劃項(xiàng)目(2014BAD14B02,2014BAD14B03) 國家公益性行業(yè)(農(nóng)業(yè))科研專項(xiàng)(201203030,201303126)
【分類號】：S154.3
【相似文獻(xiàn)】
相關(guān)期刊論文 前3條
1 宋玉芳,任麗萍,許華夏;不同施肥條件下旱田養(yǎng)分淋溶規(guī)律實(shí)驗(yàn)研究[J];生態(tài)學(xué)雜志;2001年06期
2 黨廷輝,郭勝利,樊軍,郝明德;長期施肥條件下黃土旱塬土壤NO_3~-N的淋溶分布規(guī)律[J];應(yīng)用生態(tài)學(xué)報(bào);2003年08期
3 ;[J];;年期
相關(guān)碩士學(xué)位論文 前2條
1 甘露;污水灌溉與施肥條件下氮素在土壤中遷移轉(zhuǎn)化動(dòng)態(tài)的初步研究[D];中國農(nóng)業(yè)大學(xué);2002年
2 徐金忠;不同施肥條件下黑土碳氮組分變化特征研究[D];東北林業(yè)大學(xué);2010年
，本文編號：2287290
本文鏈接：http://sikaile.net/kejilunwen/nykj/2287290.html
最近更新
教材專著
