本文關(guān)鍵詞：改良劑對(duì)旱地紅壤有機(jī)碳組分及微生物的影響　出處：《南昌工程學(xué)院》2017年碩士論文　論文類(lèi)型：學(xué)位論文

  更多相關(guān)文章： 生物質(zhì)炭 過(guò)氧化鈣 活性有機(jī)碳組分 土壤酶活性 微生物群落結(jié)構(gòu)

【摘要】：針對(duì)江西旱地紅壤肥力低下,生產(chǎn)力不高,土壤固碳不強(qiáng)等突出問(wèn)題,基于長(zhǎng)期野外旱地紅壤定位試驗(yàn),試驗(yàn)設(shè)置生物質(zhì)炭和過(guò)氧化鈣單施及配施9個(gè)處理,即CK、C0Ca1、C0Ca2、C1Ca0、C2Ca0、C1Ca1、C1Ca2、C2Ca1、C2Ca2,研究改良劑(生物質(zhì)炭和過(guò)氧化鈣)對(duì)旱地紅壤活性有機(jī)碳、與碳代謝相關(guān)酶活性、微生物群落結(jié)構(gòu)和作物產(chǎn)量的影響,可為旱地紅壤改良、提高紅壤肥力和增加作物產(chǎn)量提供理論基礎(chǔ)和參考價(jià)值。主要研究結(jié)果如下:(1)生物質(zhì)炭單施及與過(guò)氧化鈣配施均在一定程度上提高了旱地紅壤有機(jī)碳及活性碳組分,且效果優(yōu)于單施過(guò)氧化鈣。C2Ca0、C2Ca1和C2Ca2處理土壤有機(jī)碳增加較顯著。生物質(zhì)炭和過(guò)氧化鈣顯著提高土壤活性有機(jī)碳組分,其中C1Ca0處理的微生物量碳平均增加了45.22%,C1Ca2處理的可溶性有機(jī)碳平均增加了21.34%,C1Ca0處理的顆粒有機(jī)碳平均增加了20.72%,C2Ca2處理的易氧化有機(jī)碳平均增加了22.19%。生物質(zhì)炭和過(guò)氧化鈣對(duì)提高碳庫(kù)管理指數(shù)均有較好的效果,0—10 cm和10—20 cm土層分別平均增加了11.09%、14.07%。(2)各處理均不同程度地提高了鐵鋁鍵結(jié)合態(tài)有機(jī)碳和鈣鍵結(jié)合態(tài)有機(jī)碳,這有利于旱地紅壤有機(jī)碳的積累和穩(wěn)定,尤其是對(duì)0—10 cm、10—20 cm土層土壤影響效果顯著。施用生物質(zhì)炭對(duì)提高鐵鋁鍵結(jié)合態(tài)有機(jī)碳含量的效果優(yōu)于單施過(guò)氧化鈣,以C2Ca0處理效果較好;各處理在0—60 cm各土層鈣鍵結(jié)合態(tài)有機(jī)碳含量平均增加約41.11%、52.42%、10.17%、7.55%,且配施效果優(yōu)于單施生物質(zhì)炭。(3)添加生物質(zhì)炭對(duì)旱地紅壤酶活性均有促進(jìn)作用,且對(duì)0—10 cm土層土壤酶的影響較10—20 cm土層明顯;配施(C2Ca2)明顯提高旱地紅壤淀粉酶、纖維素酶和β-葡糖苷酶活性,且分別平均增加約7.01%、3.41%和16.33%,C1Ca1明顯提高紅壤蔗糖酶活性,增加約66.13%。(4)施用改良劑能提高旱地紅壤微生物磷脂脂肪酸(PLFA)總量,還可以改善微生物群落結(jié)構(gòu),單施生物質(zhì)炭處理及與過(guò)氧化鈣配施處理效果優(yōu)于單施過(guò)氧化鈣處理。在0—10 cm、10—20 cm土層土壤革蘭氏陽(yáng)性菌和革蘭氏陰性菌的相對(duì)豐度較大,為優(yōu)勢(shì)菌種,其次為放線菌。(5)施用生物質(zhì)炭和過(guò)氧化鈣均有利于旱地紅壤作物產(chǎn)量的提高,單施生物質(zhì)炭對(duì)紅薯產(chǎn)量效果優(yōu)于單施過(guò)氧化鈣,且配施效果更好�？傊�,施加改良劑可以改善土壤有機(jī)碳組分和微生物群落結(jié)構(gòu),提高土壤與碳代謝相關(guān)酶活性,有效增加作物產(chǎn)量和經(jīng)濟(jì)效益。
[Abstract]:In Jiangxi red soil fertility is low, productivity is not high, the soil carbon sequestration is not strong, long-term field experiment based on soil test set, biomass carbon and calcium peroxide single nitrogen fertilizer and 9 treatments, namely CK, C0Ca1, C0Ca2, C1Ca0, C2Ca0, C1Ca1, C1Ca2, C2Ca1, C2Ca2. Study on modifier (biomass carbon and calcium peroxide) on soil active organic carbon and carbon metabolism related enzyme activity, effect of microbial community structure and crop yield, for soil improvement, improve soil fertility and provide a theoretical basis and reference value to increase crop yield. The main results are as follows: (1) biomass carbon the single application of fertilizer and calcium peroxide were improved to a certain extent soil organic carbon and active carbon fractions, and the effect is better than the single application of calcium peroxide.C2Ca0, C2Ca1 and C2Ca2 of soil organic carbon increased significantly. The biomass carbon and oxygen Calcium significantly increased soil labile organic carbon fractions, the microbial biomass carbon C1Ca0 treatment increased by 45.22% on average, soluble organic carbon C1Ca2 treatment increased by 21.34% on average, particulate organic carbon C1Ca0 treatment increased by 20.72% on average, C2Ca2 treatment of easily oxidized organic carbon increased by an average of 22.19%. biomass carbon and calcium peroxide to improve have the good effect of carbon pool management index, 0 - 10 cm and 10 - 20 cm soil layer were increased by an average of 11.09%, 14.07%. (2) of all treatments increased the iron and aluminum bonded organic carbon and calcium - SOC, which is conducive to soil organic carbon accumulation and stability. Especially for the 0 - 10 cm, 10 - 20 cm soil. Significant effect of biochar application effect on organic carbon content increased iron and aluminum bond better than the single application of calcium peroxide to C2Ca0, better treatment effect; each treatment in 0 - 60 The depth of cm of calcium bond bound organic carbon content increased about 41.11%, 52.42%, 10.17%, 7.55%, and the fertilizer effect is better than single application of biochar. (3) adding biochar on soil enzyme activity were dry promoting effect, and 0 - 10 cm soil enzyme effect is 10 - 20 cm soil layer significantly fertilizer; (C2Ca2) increased significantly soil amylase, cellulase and glucosidase activity respectively, and the average increase of about 7.01%, 3.41% and 16.33%, C1Ca1 increased invertase activity in red soil, increase about 66.13%. (4) using modifying agent can improve the dry red soil microbial phospholipid fatty acid (PLFA) is the total can improve the microbial community structure, biomass carbon and single nitrogen fertilizer and calcium peroxide treatment effect is better than the single application of calcium peroxide treatment. In 0 - 10 cm, 10 - 20 cm soil layer of gram positive and gram negative bacteria abundance large, dominant bacteria A, followed by actinomycetes. (5) the application of biomass carbon and calcium peroxide were beneficial to soil to improve crop yields, the single application of biochar on the yield of sweet potato is better than the effect of single application of calcium peroxide, and the effect is better. In a word, adding modifiers can improve the soil organic carbon fractions and microbial community structure, improve soil and carbon metabolism enzyme activity, effectively increase crop yield and economic benefit.

【學(xué)位授予單位】：南昌工程學(xué)院
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：S156.2

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 吳華清;陳小梅;林媚珍;張靜;褚國(guó)偉;鄧琦;;降水處理對(duì)南亞熱帶季風(fēng)林土壤微生物群落結(jié)構(gòu)的影響[J];生態(tài)環(huán)境學(xué)報(bào);2016年04期

2 吳昊;孫麗娜;王輝;王曉旭;;CaO_2/Fe~(2+)活化過(guò)硫酸鈉對(duì)石油類(lèi)污染土壤的修復(fù)效果[J];環(huán)境化學(xué);2016年04期

3 張文鋒;周際海;袁穎紅;黃靜;李叢蕾;黃欠如;成艷紅;;低劑量生物質(zhì)炭對(duì)旱地紅壤增肥增產(chǎn)效果[J];生態(tài)學(xué)雜志;2016年03期

4 李爽;李正陽(yáng);馬會(huì)強(qiáng);;過(guò)氧化鈣制備方法及在環(huán)境修復(fù)應(yīng)用中的研究進(jìn)展[J];當(dāng)代化工;2015年12期

5 盧焱焱;王明偉;陳小云;劉滿強(qiáng);陳效民;成艷紅;黃欠如;胡鋒;;生物質(zhì)炭與氮肥配施對(duì)紅壤線蟲(chóng)群落的影響[J];應(yīng)用生態(tài)學(xué)報(bào);2016年01期

6 劉歡歡;董寧禹;柴升;王楓;劉濤;蔣士君;;生態(tài)炭肥防控小麥根腐病效果及對(duì)土壤健康修復(fù)機(jī)理分析[J];植物保護(hù)學(xué)報(bào);2015年04期

7 樊詩(shī)亮;何麗芝;秦華;楊興;王海龍;;生物質(zhì)炭對(duì)鄰苯二甲酸二丁酯污染土壤微生物群落結(jié)構(gòu)多樣性的影響[J];環(huán)境科學(xué)學(xué)報(bào);2016年05期

8 李叢蕾;周際海;袁穎紅;張文鋒;黃靜;黃欠如;成艷紅;;改良劑對(duì)旱地紅壤團(tuán)聚體及有機(jī)碳分布的影響[J];水土保持學(xué)報(bào);2015年03期

9 張又弛;李會(huì)丹;;生物炭對(duì)土壤中微生物群落結(jié)構(gòu)及其生物地球化學(xué)功能的影響[J];生態(tài)環(huán)境學(xué)報(bào);2015年05期

10 孔絲紡;姚興成;張江勇;姚曉東;曾輝;;生物質(zhì)炭的特性及其應(yīng)用的研究進(jìn)展[J];生態(tài)環(huán)境學(xué)報(bào);2015年04期

，

本文編號(hào)：1364168