期刊论文

中文

湖南农业大学学报(自然科学版)

1007-1032

2005

31

3

314-316

10.3321/j.issn:1007-1032.2005.03.023

国家“863”计划资助项目（863-306-ZD05-3-E）； 国家自然科学基金资助项目（39670142）； 湖南省科技厅资助项目（NKY2001-01）；

本校为第一机构

通过田间试验,对稻鸭鱼共栖生态系统中水稻根系特性及共栖系统的经济效益进行了研究.结果表明:稻鸭鱼共栖能提高水稻根系活力,在水稻分蘖始期、分蘖盛期、孕穗期、齐穗期和成熟期,稻-鸭-鱼区中的根系α-萘胺氧化力比不放鸭鱼区的分别高18.6%,18.3%,8.3%,13.7%,34.4%.稻-鱼区中的根系α-萘胺氧化力比不放鸭鱼区的分别高9.9%,8.8%,0.8%,7.0%,14.1%.根系总吸收表面积自移栽后迅速增加,到孕穗期前后达到最大值,稻-鸭-鱼、稻-鱼和不放鸭鱼区在孕穗期分别达到2.690 7×106,2.348 5×106和2.269 2×106m2/hm2,自此之后,增长缓慢或略有下降.根系吸收活跃表面积在齐穗期达到最高,稻-鸭-鱼、稻-鱼和不放鸭...

Through farmland trial,the character of paddy roots in rice-duck-fish commensalisms ecosystem and its economic benefit were studied.The results showed that rice-duck-fish commensalisms could improve the activity of paddy roots.At the initial tillering stage,full tillering stage,booting stage,full heading stage and ripening period,the roots α-naphthylamine oxidation capability under rice-duck-fish treatment was respectively higher than those in CK area by 18.6%,18.3%,8.3%,13.7%,34.4%,under rice-fish treatment it was higher than those under CK t...