摘要
通过盆栽和大田试验,研究了氮镉交互作用下不同改良剂(有机肥、双氰胺和石灰)对辣椒品质的影响。结果表明:在试验范围内,有机肥处理与对照相比均显著提高了辣椒中干物质和叶绿素的含量;3种改良剂的施用均降低了辣椒中Vc、可溶性糖、可溶性蛋白以及镉与硝酸盐的含量,对Vc的影响是对照>石灰>有机肥>双氰胺,但是盆栽中石灰、有机肥与对照间差异不显著;对可溶性蛋白来说:对照>双氰胺>石灰>有机肥,但盆栽中双氰胺、石灰处理间差异不显著,大田中3种改良剂处理间差异均不显著;对于可溶性糖来说:对照>有机肥>双氰胺>石灰,但在大田中双氰胺、有机肥处理间差异不显著;有机肥、石灰、双氰胺处理与对照相比,盆栽和大田中辣椒镉的累积量分别降低5.37%、30.99%、35.95%和52.75%、84.62%、86.26%;双氰胺、有机肥、石灰处理与对照相比,盆栽和大田中硝酸盐的累积量分别降低21.78%、31.37%、35.90%和12.67%、25.51%、34.68%。
The effect of different modifiers on the pepper quaility under interaction of nitrogen nutrition and cadmium eontamination was studled by a pot and field experiment. The results showed that organic fertilizers could raise the content of the dry matter and chlorophyll in pepper. 3 modifiers significantly decreased the content of Vc, soluble sugar, soluble protein, Cd and nitrate. The sequence： of the effect on Vc was CK 〉 lime 〉 organic fertilizers 〉 dicyandiamide, hut the differences of lime, organic fertilizer and contract was not obvious in the pot experiment. The sequence of the effect on the soluble protein was CK 〉 dicyandiamide 〉 lime 〉 organic fertilizers, but in the pot experiment, the difference of dicyandiamide and llme was not significant ,and in the field experiment, 3 modifiers had no obvious differences. The sequence of the effect on the soluble sugar was CK 〉 organic fertilizers 〉 dicyandiamide 〉 lime, but dicyandiamide and organic fertilizers treatment had no significant differences. Comparing with CK,in the pot and field experiment, organic fertilizer,lime, dicyandiamide could make content of Cd in the pepper decrease 5.37 % ,30. 99 % ,35.95 % and 52.75 % ,84.62 % ,86.26 %, respectively. Comparing with CK, in the pet and field experiment ,dicyandiamide, organic fertilizer,lime could make content of nitrate in the pepper decrease 21.78 % ,31.37 % ,35.90 % and 12.67 % ,25.51% ,34.68 %.
出处
《西南农业学报》
CSCD
北大核心
2011年第4期1480-1483,共4页
Southwest China Journal of Agricultural Sciences
基金
武汉市教育局科研项目(2008K081)
国家十一五科技支撑计划(2008BADAO3)
关键词
石灰
有机肥
双氰胺
氮
镉
辣椒
品质
Liming
Organic fertilizer
Dicyandiamide
Nitrogen nutrition
Cd contamination
Pepper
Quaility
