不同用量腐植酸复合肥在辣椒上的施用效应及其防衰增产机理研究  

Effects of different application rates of humic acid compound fertilizer on pepper and its mechanism of anti-senility and incremental yield

作　　者：孙志梅[1] 薛世川[2] 梁文举[1] 刘玉柱[2] 

机构地区：[1]中国科学院沈阳应用生态研究所,沈阳110016 [2]河北农业大学资源与环境科学学院,保定071001

出　　处：《应用生态学报》2004年第1期81-84,共4页Chinese Journal of Applied Ecology

基　　金：国家"九五"重中之重推广研究 (96110 10 3A);国家"863"计划资助项目 (2 0 0 1AA2 460 2 1)

摘　　要：以辣椒为供试作物进行盆栽试验 ,对不同用量腐植酸复合肥在辣椒上的施用效应及其防衰增产机理进行研究 .结果表明 ,不同肥料用量对辣椒体内各种生理活动均有明显影响 ,并最终影响产量 ,且与无机复合肥相比 ,腐植酸复合肥表现了明显的优势 .NRA随施肥量的增加而提高 ,但变化速率逐渐下降 ;SOD活性在施肥量低于 0 .2g·kg-1时 ,随施肥量的增加显著提高 ,但当施肥量超过 0 .2g·kg-1后 ,SOD活性开始显著降低 ;对POD活性的影响与对NR活性的影响趋势基本一致 ,但当施肥量超过 0 .3g·kg-1时 ,无机肥处理的POD活性显著提高 ,而HA复合肥处理的POD活性变化则始终较平缓 ;对辣椒叶片蒸腾速率的影响与对SOD活性的影响趋势是一致的 .施肥量与辣椒产量之间呈显著二次曲线相关 ,HA复合肥最高产量施肥量 (纯养分量 )为 0 .2 7g·kg-1,每盆最高产量为 16 5 .2 2 g .The effects of different application rates of humic acid compound fertilizer (HA) abstract on the yield and physiological characteristics of pepper ( Capsicum frutescens L.) abstract were studied in this paper. The results showed that different application rates of (HA) abstract could affect the physiological activities and yield of pepper. The nitrate reductase activity (NRA) abstract and peroxidase (POD) abstract activity were improved with increasing application rate, but the change rate of NRA was reduced gradually. POD activity in inorganic compound fertilizer treatment was improved significantly when the application rate of fertilizer was higher than 0.3 g·kg -1 ,but that in HA treatment changed smoothly. Superoxide dismutase (SOD) abstract activity was improved significantly when the application rate of fertilizer was lower than 0.2 g·kg -1 , and decreased gradually when the application rate was higher than 0.2 g·kg -1 . The change of transpiration rate was consistent with that of SOD activity. The relationship between the application rate of fertilizer and the yield of pepper could be described with quadratic curve regression model. According to the equation, the highest application rate of HA should be 0.27 g·kg -1 , and the highest yield of pepper could reach 165.22g per pot.

关 键 词：腐植酸复合肥 辣椒 施肥量 防衰增产机理 

分 类 号：S641.3[农业科学—蔬菜学]