摘要
采用盆栽试验,研究了海藻寡糖增效尿素对水稻光合特性、碳代谢关键酶活性及相关产物积累的影响。结果表明,和普通尿素相比,海藻寡糖增效尿素处理的水稻净光合速率(P_n)、气孔导度(G_s)、胞间CO_2浓度(C_i)和水分利用效率(WUE)有所增加,气孔限制值(L_s)有所降低,叶绿素含量和核酮糖-1,5-二磷酸羧化加氧酶(Rubisco)活性显著提高。拔节期、齐穗期和成熟期叶中和籽粒中蔗糖磷酸合成酶(SPS)、蔗糖合成酶(SUS)和腺苷二磷酸葡萄糖焦磷酸化酶(ADPase)活性显著增强,从而促进籽粒中蔗糖和淀粉积累;地上部和地下部生物量在4个生育期也均显著增加,籽粒产量显著提高,其中较对照增加9.32%,较普通尿素处理增加3.94%。
Pot experiments were used to study the effects of alginate-derived oligosaccharide（ ADO） synergistic urea on photosynthetic characteristics,key enzymes activities and carbon metabolites accumulation of rice（ Oryza. Sativa L.）. The results showed that net photosynthetic rate（ Pn）,stomatal conductance（ Gs）,intercellular CO2 concentration（ Ci） and water use efficiency（ WUE） of rice under ADO synergistic urea treatment were increased,and stomatal limitation value（ Ls） was decreased,compared with ordinary urea. Chlorophyll content and ribulose-1,5-bisphosphate-caboxylase（ Rubisco） activity were also significantly raised. At booting,full heading and maturing stages,sucrose phosphate synthase（ SPS）,sucrose synthase（ SUS） and ADP-glucose pyrophosphorylase（ ADPase） activity in leaves or grain of rice were significantly enhanced,thus contributing to the accumulation of sucrose and starch in grain. Aboveground and belowground biomass were also significantly increased at all the four growth stages. Rice yield of ADO synergistic urea treatment was significantly raised by 9. 32%compared with the control,and was higher than that of ordinary urea treatment by 3. 94%.
出处
《中国土壤与肥料》
CAS
CSCD
北大核心
2016年第3期54-59,共6页
Soil and Fertilizer Sciences in China
基金
河南省财政预算项目"氮肥增值提效及高效施用技术研究与应用"(2016)
河南省农业科学院科研发展专项资金项目"优质稻米的关键施肥技术研究"(20137913)
河南省农业科学院自主创新项目(2069999)
关键词
海藻寡糖增效尿素
水稻
光合特性
碳代谢产物
alginate-derived oligosaccharide synergistic urea
rice
photosynthetic characteristics
carbon metabolites
