农业机械学报2017，Vol.48Issue(6)：176-183,8.DOI:10.6041/j.issn.1000-1298.2017.06.023
不同水氮处理对水稻荧光参数和光合特性的影响
Effect of Different Water and Nitrogen Levels on Chlorophyll Fluorescence Parameters and Photosynthetic Characteristics of Rice
摘要
Abstract
In order to establish water-saving,high quality and efficient production model in the black soil of cold region of rice,fluorescence parameters and photosynthetic characteristics were measured by using LI-6400XT photosynthetic apparatus in the main growth period of rice under different water and fertilizer treatments.The results showed that photochemical quantum efficiency of rice (Fv/Fm),photochemical quenching factor coefficient qP and non-photochemical quenching coefficient qN were decreased with the decrease of irrigation amount.With the increase of nitrogen,Fv/Fm at the bloom stage,qp at jointing stage showed inverted-V-trend,it showed that PSⅡ reaction center was adjusted due to different treatments of water and fertilizer in black soil of cold area of rice,primary energy conversion efficiency of PSⅡ,potential activity of PSⅡ,photosynthetic electron transport,photosynthetic primary reaction process and heat dissipation capacity subjected to varying degrees of inhibition or improvement.The stomatal limitation of controlled irrigation was greater than that in flood irrigation,it did not affect the photosynthesis of rice leaves.Through simulated light response curves under fertilizer rate of 110 ～ 160 kg/hm2 treatment,it showed that the curve was increased with the increase of nitrogen and the LSP and LCP were reduced significantly,but α,θ and P were increased to some extent.Through comparison among different treatments of irrigation,LSP,LCP and θ of the flood irrigation were less than those in control irrigation,and P was increased significantly,but the change of Rd and α were not obvious,it showed that high rate of fertilizer was benefit for utilization of low light in rice leaves,reduced water consumption was benefit for utilization of strong light.Therefore,water and nutrient coercion would improve the adaptability of rice leaves to light,and increasing of nitrogen amount can efficiently improve the light response characteristics.关键词
水稻/水氮处理/荧光参数/光合特性/寒区黑土Key words
rice/water and nitrogen treatment/fluorescence parameter/photosynthetic characteristics/black soil in cold area分类
农业科技引用本文复制引用
张忠学,郑恩楠,王长明,贠宁晗..不同水氮处理对水稻荧光参数和光合特性的影响[J].农业机械学报,2017,48(6):176-183,8.基金项目
国家重点研发计划项目(2016YFC0400108) （2016YFC0400108）
