本文關(guān)鍵詞：生物炭與氮肥減量配施對(duì)烤煙生長(zhǎng)及土壤酶活性的影響，，由筆耕文化傳播整理發(fā)布。

生物炭與氮肥減量配施對(duì)烤煙生長(zhǎng)及土壤酶活性的影響

Effects of Biochar Addition Combined with Reducing Nitrogen Application Rate on Growth of Flue-cured Tobacco and Soil Enzyme Activities

[1] [2] [3] [4] [5] [6]

LIU Ling , WANG Yanfang , SONG Jiuyang , ZHOU Junxue , WANG Xiaodong , CHEN Mingcan （ 1. School of Agriculture, Henan University of Science ＆ Technology, Luoyang 471003,

[1]河南科技大學(xué)農(nóng)學(xué)院,河南洛陽(yáng)471003; [2]洛陽(yáng)市煙草公司,河南洛陽(yáng)471000

文章摘要：通過(guò)盆栽試驗(yàn)研究了生物炭與氮肥減量配施（CK：常規(guī)施氮量;T1：常規(guī)施氮量＋生物炭;T2：90%常規(guī)施氮量＋生物炭;T3：80%常規(guī)施氮量＋生物炭;T4：70%常規(guī)施氮量＋生物炭）對(duì)烤煙生長(zhǎng)及土壤酶活性的影響,以期為生物炭輸入條件下烤煙的氮肥運(yùn)籌提供理論依據(jù)。結(jié)果表明,與CK相比,在常規(guī)施氮量條件下添加生物炭顯著增加了煙葉葉綠素a＋b和類(lèi)胡蘿卜素的含量,顯著提高了煙株根系活力及土壤酶活性,促進(jìn)了烤煙的生長(zhǎng);在生物炭添加條件下,減少常規(guī)施氮量的10%-20%并沒(méi)有顯著影響煙株生長(zhǎng)及煙葉葉綠素a＋b含量、類(lèi)胡蘿卜素含量、凈光合速率,且更有利于提高土壤酶活性、煙株根系活力和根冠比。建議在生物炭輸入條件下適量減少氮肥施用量,這樣更有利于提高煙田氮肥利用效率,保障煙區(qū)健康發(fā)展。

Abstr：A pot experiment was conducted to investigate the influences of biochar addition combined with reducing nitrogen application rate（ CK： conventional nitrogen application rate; T1： conventional nitrogen application rate combined with biochar; T2： 90% conventional nitrogen application rate combined with biochar; T3： 80% conventional nitrogen application rate combined with biochar; T4： 70%conventional nitrogen application rate combined with biochar） on growth of flue-cured tobacco and soil enzyme activities,so as to provide theoretical basis for nitrogen application rate under biochar addition condition. The results showed that compared with CK,the treatment of conventional nitrogen application rate combined with biochar significantly increased the contents of tobacco chlorophyll and carotenoid,significantly enhanced tobacco root activity and soil enzyme activities,and promoted the growth of tobacco; the treatments of biochar addition combined with 10% —20% reducing nitrogen application rate were benificial to improve the soil enzyme activities,tobacco root activity and root-shoot ratio when compared with the control. This research suggested that reducing nitrogen application rate was beneficial to improve nitrogen use efficiency and guarantee the healthy development of tobacco production area under biochar addition condition.

文章關(guān)鍵詞：

Keyword：:biochar reducing nitrogen application rate flue-cured tobacco root activity net photosynthesis rate soil enzyme activities

課題項(xiàng)目：國(guó)家自然科學(xué)基金項(xiàng)目（31200332）; 河南科技大學(xué)人才基金項(xiàng)目（09001597）;河南科技大學(xué)青年科學(xué)基金項(xiàng)目（2012QN004）; 河南省煙草公司項(xiàng)目（M201307）

  本文關(guān)鍵詞：生物炭與氮肥減量配施對(duì)烤煙生長(zhǎng)及土壤酶活性的影響，由筆耕文化傳播整理發(fā)布。