Microsoft Word - 郑丽燕_new_.doc

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1 Chinese Journal of Eco-Agriculture, March 2009, 7(2): DOI: /SP.J * 郑丽燕侯玲利陈炎辉郭雅玲 2 卓晶晶王果 ** ( ; ) 为了解铁观音茶园土壤氮素供应能力, 对福建安溪永春和华安 4 个铁观音生产乡镇 50 个铁观音茶园表土及相应茶叶进行了调查结果表明 : 供试茶园土壤全氮含量处于中低水平, 平均值为 0.79 g kg, 碱解氮含量处于中高水平, 平均值为 mg kg, 全氮含量与碱解氮含量呈显著正相关有机质及阳离子交换量与土壤全氮和碱解氮含量均呈极显著正相关不同土壤类型全氮含量依次为水稻土改种 > 黄壤 > 红壤 > 黄红壤 > 赤红壤, 质地黏重的土壤氮含量较高茶树新梢氮含量变幅为 8.~4.8 g kg, 平均值为 23.7 g kg, 与土壤碱解氮含量无显著相关性土壤碱解氮含量是否能作为茶园土壤供氮能力的指标以及在铁观音茶树的营养诊断时茶树新梢的氮素含量是否能作为茶树缺素的诊断指标有待进一步研究福建铁观音茶园土壤应注意增施有机肥, 避免过度施用速效氮肥铁观音茶园土壤茶叶氮素福建省 : S58.3; S57. : A : (2009) Soil nitrogen status in Tieguanyin tea plantation of Fujian Province ZHENG Li-Yan, HOU Ling-Li, CHEN Yan-Hui, GUO Ya-Ling 2, ZHUO Jing-Jing, WANG Guo (. College of Resources and Environmental Sciences, Fujian Agriculture and Forestry University, Fuzhou , China; 2. College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou , China) Abstract An investigation on the content and availability of nitrogen in surface soil and corresponding nitrogen concentration in tea leaf was conducted in 4 major Tieguanyin tea-producing areas in Anxi, Yongchun and Hua an Counties of Fujian Province. The objective of the research was to determine N supply capacity of soil of Tieguanyin tea plantation in Fujian Province. To that end, 50 surface soil samples and corresponding tea leaves were collected and analyzed. The results show that total soil N is medium to low with an average of 0.79 g kg. Alkali-hydrolysis N is medium to high with an average of mg kg. Total soil N is significantly correlated with alkali-hydrolysis N. Organic matter content and CEC have significant correlations with both total and alkali-hydrolysis N. Total soil N content also depends on the parent soil, and decreases in the following order: paddy rice soil > yellow soil > red soil > yellowish red soil > lateritic red soil. Soil with higher clay content contains higher total N. N concentration in tea leaf ranges from 8.~4.8 g kg, with an average of 23.7 g kg. No significant correlation exists between tea-leaf N and soil alkali-hydrolysis N. The use of alkali-hydrolysis N as a source of soil nitrogen and tea-leaf N concentration index to monitor N deficiency in tea plants is subject to further research. More organic manure is required for the tea plantations in Fujian Province. It is important to avoid over application of N fertilizer. Key words Tieguanyin, Tea plantation, Soil, Tea leaf, Nitrogen, Fujian Province (Received Feb. 28, 2008; accepted June 30, 2008), CO 2 H 2 O, [] [2],,,,, * ** : (957~),,,, gwang572003@yahoo.com.cn (982~),,, zliyan226@63.com : :

2 [3 7],,, [8],, 材料与方法. 4 ph 2.85~5.5, 3.96, ; 20.6 g kg, 5.8~5.7 g kg ; 5.85~28.08 cmol kg, 2.7 cmol kg ;, 40.5 g kg g kg,, (0~25 cm) 50,,, 0.5 mm.2 ph ( ),,,,,,, H 2 SO 4 -H 2 O 2 [9 ].3 DPS Excel 2 结果与分析 2., 0.~2.5 g kg, 0.79 g kg (NYT ) ()()() >.0 g kg 0.8~.0 g kg <0.8 g kg [2] 24.7 %, 9.3 %, 56.0 %, 3 00% ; 0.8~.0 g kg ;.0 g kg, Tab. 表福建省铁观音茶园土壤全氮含量状况 Soil total N contents of Tieguanyin tea plantations in Fujian Province Sample number Range (g kg ) Grade rating (%) Average (g kg ) Ⅰ Ⅱ Ⅲ Jingu ~ ± Huqiu ~ ± Changkeng 7 0.~ ± Taozhou ~ ± Xiping ~ ± Xianghua ~ ± Xiandu ~ ± Gande ~ ± Hengkou ~ ± Lantian ~ ± Lutian ~.38.03± Daping ~.68.0± Longjuan ~2.5.20± Jiandou 3.07~.53.30± / Total/average 50 0.~ ±

3 2 : 227 Tab. 2 表 2 福建省铁观音茶园土壤碱解氮含量状况 Soil alkali-hydrolysis N contents of Tieguanyin tea plantations in Fujian Province Sample number Range (mg g ) Grade rating (%) Average (mg g ) Ⅰ Ⅱ Ⅲ Taozhou ~ ± Changkeng ~ ± Jingu ~ ± Jiandou ~ ± Huqiu ~ ± Daping ~ ± Xiping ~ ± Xianghua ~ ± Lutian ~ ± Lantian ~ ± Gande ~ ± Longjuan ~ ± Hengkou ~ ± Xiandu ~ ± / Total/average ~ ± , 22.88~ mg g, mg g (NYT ) ()()() >00 mg kg 50~00 mg kg <50 mg kg [2] 39.3% 56.0%, 4.7%; () 50 mg kg,,,, y= 57.55x , r=0.65 ** [n=50, P 0.05 (50)=0.59, P 0.0 (50)=0.208], [3] CEC : y= x + 0., r=0.764 ** (n=50); : y=2.543x , r=0.624 ** (n=50), : y=0.032x , r=0.389 ** (n=50); : y=.739 2x , r=0.224 ** (n=50), (),, >>>>,, ;,,, ; [4] >> >>,,,,, >> : y= x+7.58, r= 0.99 * (n=50); : y= x , r=0.203 * (n=50), [5],,,,

4 ,,,,,,,,, , > > > > > > >, > > > > > > >,,,,, ;,,,,,, Tab. 3 表 3 福建省铁观音茶园岩石类型与土壤氮含量的关系 Relationships between rock types and soil nitrogen content in Tieguanyin tea plantation in Fujian Province Rock type Total N Content Sig. (g kg ) Alkali-hydrolysis N Content Sig. (mg kg ) Sandstone.32±0.50 a A 08.99±63.09 ab AB Rhyolite.08±0.07 ab AB 6.07±8.27 a A Metamorphic rock.05±0.3 abc ABC 25.88±23.73 a A Rhyolitic tuff.03±0.34 abc ABCD 03.27±37.2 abc ABC Tuff 0.93±0.37 bcd ABCD 9.36±35.94 abcd ABCD Dacite tuff 0.76±0.32 cde BCDE 0.83±3.25 abcd ABCD Grinate 0.66±0.25 cde CDE 84.45±25.75 bcd ABCD Diorite 0.59±0.26 e CE 77.55±26.89 bd BD , 22.8 g kg,, 8. g kg 45.8 g kg,, 2.2 g kg ;, 8. g kg 45.8 g kg 2.3.2,, [6],,,,,, [7] Tab. 4 表 4 福建省铁观音茶叶氮含量变化 Nitrogen concentrations in Tieguanyin tea leaves in Fujian Province g kg Sample number Range Average Huqiu 5 8.9~ ±4.0 Xiandu 6 2.2~5. 3.7±.08 Xiping 27 8.~ ±9.30 Jingu 3 7.4~ ±2.7 Gande 8 2.0~ ±4.30 Xianghua 2 4.2~ ±2.99 Changkeng 7 4.2~ ±3.24 Hengkou ~ ±2.25 Longjuan ~ ±3.0 Taozhou ~ ±2.68 Lutian 7 27.~ ±2.83 Daping ~ ±3.92 Lantian ~ ±7.69 Jiandou 3 3.7~ ±5.08 / Total/average 45 8.~ ±

5 2 : 229,,,,,,,,,,,,, 3 结论,,,,, >> >>,, 参考文献 [],,. [J]., 2004, 26(): [2],. [J]., 2005, 2(): [3]. [J]., 200 (3): 7 9 [4],,,. [J]., 2005, 3(7): [5],,,. 5 N [J]., 2005 (): 4 5 [6],,,.. Ⅱ.[J]., 999 (): 3 7 [7]. [J]., 996 (2): 4 7 [8],. [J]., 2004, 30(): [9]. [M]. :, 999: 22, 07, 47 49, [0]. ()[M]. :, 2002: []. ( 2 )[M]. :, 2006: 9 25 [2]. NYT , [S]. ( , ) [3],. [J]., 995, 8(2): [4],. [J]., 989 (2): 37 4 [5],,,. [J]., 993, 9(3): [6],. [J]., 997, 6(3): [7]. [J]., 999, 72(3): 2

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