营养调控对三价砷胁迫下苗期水稻叶绿素SPAD值的影响  

Effect of nutrient regulation on the chlorophyll SPAD value of rice seedling stressed by arsenite

作　　者：杨桂娣[1] 刘智峰[1] 林立清[1] 杨卫惠[1] 林志华[1] 黄怡[1] 杨孝军[1] 邱宗清[1] 何海斌[1] 

机构地区：[1]福建农林大学生命科学学院,福建福州350002

出　　处：《福建农林大学学报（自然科学版）》2013年第5期453-458,共6页Journal of Fujian Agriculture and Forestry University:Natural Science Edition

基　　金：福建省自然科学基金(2010J01112);福建省教育厅基金(JA10093;JA11077);2013福建农林大学创新性实验项目(039)

摘　　要：采用二次正交旋转组合设计,探讨水培液中N、P、K营养元素对三价砷[As(Ⅲ)]胁迫下"明恢63"苗期水稻叶绿素SPAD值的影响.结果表明,K调控对水稻叶绿素SPAD值的恢复率有极显著影响,N、P调控无显著性影响,N、P、K各因子之间的互作不显著,3种营养元素对水稻叶绿素SPAD值恢复率的影响为K>N>P,N、P、K最优组合为28.41、6.00和50.00mg·L-1.根据最优组合方案进行营养调控,在As(Ⅲ)胁迫下,获得"明恢63"苗期水稻叶绿素SPAD值的最优恢复率为(78.46±3.12)%.Effects of hydroponic nutrient regulation from nitrogen （N）, phosphorus （P） and potassium （K） on the chlorophyll SPAD value of Minghui63 rice （Oryza sativa L.） seedling stressed by arsenite E As （Ⅲ）] were investigated by quadratic orthogonal rotation combination design. The results showed that the effect of K regulation on the chlorophyll SPAD value of Minghui63 rice seedling stressed by As（Ⅲ） was very significant, however, there didn＇t exist significant effects for N and P regulation, the interaction level among N, P and K was lower than the significance level, the relative effects of N, P and K on the chlorophyll SPAD value of Minghui63 rice seedling stressed by As （ ]II ） were K 〉 N 〉 P, the optimal concentrations of N, P and K were 28.41, 6.00 and 50.00 mg·L-1 and the obtained recovery rate of chlorophyll SPAD value of Minghui63 rice seedling stressed by As（Ⅲ） was （78.46±3.12 ） % under the optimal nutrient combination.

关 键 词：As(Ⅲ)毒害 水稻 营养调控 二次正交旋转组合设计 叶绿素SPAD值 

分 类 号：X171.5[环境科学与工程—环境科学]