盐碱地紫花首蓿光合荧光参数与品质关系研究

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中图分类号：S541.9 文献标识码：A 文章编号：1007-0435（2025）07-2123-0

引用格式：何海锋，马进燕，许兴．盐碱地紫花苜蓿光合荧光参数与品质关系研究[J].草地学报，2025，33（7）：2123—2131 HEHai-feng，MA Jin-yan，XU Xing.Study on the Relationship between Photosynthetic Fluorescence Parameters and Quality of Alfalfa in Saline-Alkali Land[J].Acta Agrestia Sinica，2O25，33（7） ：2123—2131

Study on the Relationship between Photosynthetic Fluorescence Parameters and Qualityof Alfalfa in Saline-AlkaliLand

HE Hai-feng，MA Jin-yan，XU Xing （College ofForestry and Prataculture，Ningxia University，Yinchuan，Ningxia 75OO21，China）

Abstract：In order to systematically understand the relationship between photosynthetic fluorescence parameters and qualityofalfalfa（Medicago satiua）in Yinbei saline-alkali land in Ningxia province to screenout the domi nant alfalfa varieties，the main photosynthetic fluorescence parameters and quality indexes of four alfalfa variet ies Werecompared by field experiment，variance analysis，corelation analysis and multiple regression analysis. The results showed that among four alfalfa varieties in saline-alkali land，the net photosynthetic rate （Pn） and maximum fluorescence （Fm） ） and other photosynthetic fluorescence parameters of the alfalfa variety‘Zhongmu No.3’were both the highest，indicating the strongest photosynthetic capacity. At the same time，the content of crude protein （CP） and relative feed value（RFV） were the highest. The multiple regression results showed that the formula of crude ash（ASH）model was as follows：crude ash （ASH）=16.45-0.72×non -photochemical quenching（NPQ）一O. 40× relative feedingvalue （RFV）+0.48× transpiration rate （TR）-0.33× crude fat（Ether extract，EE） +0.32× potential activity （Fv/Fo） ， R2=0.84 . The formula of crude protein （CP）model was as follows：crude protein（CP）=5. 48+0.06× relative feeding value（RFV）， R2=0.61 ： Therefore，‘ Zhongmu No. alfalfa might be an advantageous forage variety with great promotion value in different types of saline-alkali land in Yinbei area of Ningxia province.

Key words： Saline-alkali soil; Photosynthetic fluorescence parameters;Nutritional quality; Variance analysis， Correlation analysis;Multiple linear regression analysis

第三次全国国土调查显示，我国盐碱地面积约7.67×106hm2 ，主要分布在三大片区：一是中西部干旱半干旱地区以硫酸盐-氯化物为主的盐碱地，占全国盐碱地的 96.10% ；二是东北地区以碳酸盐为主的苏打盐碱地，占全国盐碱地的 3.20% ；三是东部沿海以氯化物为主的滨海盐碱地，不到全国盐碱地的1.00%[1-2] 。（剩余11473字）