本文關(guān)鍵詞：生物炭輸入對(duì)碳酸鈣調(diào)控油菜生長(zhǎng)及重金屬富集的影響，由筆耕文化傳播整理發(fā)布。

生物炭輸入對(duì)碳酸鈣調(diào)控油菜生長(zhǎng)及重金屬富集的影響

Effect of biochar input on the regulation of calcium carbonate application to rape growth and heavy metal accumulation in contaminated soil

[1] [2] [3] [4]

BI Lijun, HOU Yanwei, CHI Haifeng, SU Yuhong （1. College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi, 830046, China; 2. Department of Environmental Sci

[1] 新疆大學(xué)化學(xué)化工學(xué)院,烏魯木齊830046; [2] 華僑大學(xué)化工學(xué)院環(huán)境科學(xué)與工程系,廈門(mén)361021

文章摘要：采用油菜盆栽試驗(yàn)，研究了1％和5％水稻秸稈生物炭投加量配施碳酸鈣對(duì)重金屬污染的郴州和龍巖土壤的pH值、有機(jī)質(zhì)、油菜可食生物量、重金屬累積和富集系數(shù)等的影響．結(jié)果表明，適量生物炭輸入可以促進(jìn)碳酸鈣的調(diào)控效果．相比對(duì)照，單施碳酸鈣可提高土壤pH值，，但對(duì)有機(jī)質(zhì)沒(méi)有顯著影響．而生物炭配施比單施碳酸鈣處理最大可提高土壤pH值0．66個(gè)單位，增加有機(jī)質(zhì)含量223．0％．碳酸鈣單施可以顯著提高油菜可食部分生物量，適量配施生物炭可強(qiáng)化增產(chǎn)作用，與對(duì)照相比，郴州土壤中配施5％生物炭的強(qiáng)化效果最好，可提高油菜可食部分生物量36．5％；而龍巖土壤配施1％生物炭效果最好，油菜生物量提高67．4倍．在郴州和龍巖土壤中，碳酸鈣單施或與生物炭配施對(duì)重金屬富集的影響不同．相對(duì)而言，碳酸鈣在偏酸性的龍巖土壤中配施適量生物炭可更有效地降低土壤Cd、As、Pb在油菜可食部分的富集，降低重金屬?gòu)耐寥老蛴筒说倪w移．總體來(lái)看，生物炭配施碳酸鈣可以較好地改良土壤、促進(jìn)植物生長(zhǎng)和減少Cd、Pb的富集．

Abstr：Both calcium carbonate and biochar can be used as soil conditioner to improve the quality of soil contaminated by heavy metals. However, few studies have investigated the effect of biochar input on the promotion of calcium carbonate application in farm land. A pot experiment was carried out to investigate the effect of combined application of rice straw biochar and calcium carbonate on soil properties, edible rape biomass, heavy metal accumulation and enrichment coefficients in contaminated soils from Chenzhou and Longyan. The results showed that biochar input promotes calcium carbonate application in soils. Compared with the results of a single application of calcium carbonate, biochar addition increased soil pH value by 0. 66 units, and increased organic matter content by 223. 0%, with the biggest change in Longyan acidic soil. A single calcium carbonate application significantly increased edible rape biomass, while combined biochar addition caused a substantially larger increase. Compared with the control, 5% biochar was determined as the optimum amount for the combined application, resulting in an increase of 36.5% of edible rape in Chenzhou soil. However 1% biochar was determined as the optimum amount for Longyan soil, resulting in an increase of 67. 4 times. In the two types of soil, the performance of the combined application of biochar and calcium carbonate on the migration behavior of heavy metals was different. Biochar input more effectively promoted the calcium carbonate application which reduced the accumulation of Cd,As and Pb in edible rape in Longyan acidic soil than in Chenzhou soil. In conclusion, combined biochar and calcium carbonate application improved soil quality, promoted plant growth

文章關(guān)鍵詞：

Keyword：:rice straw biochar calcium carbonate rape heavy metal

課題項(xiàng)目：福建省自然科學(xué)基金項(xiàng)目（2012J01177）和中央高�；究蒲袠I(yè)務(wù)費(fèi)專(zhuān)項(xiàng)資金（11HZR07）資助.

作者信息：會(huì)員可見(jiàn)

  本文關(guān)鍵詞：生物炭輸入對(duì)碳酸鈣調(diào)控油菜生長(zhǎng)及重金屬富集的影響，由筆耕文化傳播整理發(fā)布。