植物营养与肥料学报2024，Vol.30Issue(4)：757-767,11.DOI:10.11674/zwyf.2023479
有机肥和海藻酸配施提高盐碱地蒙古黄芪抗逆性和品质
Combined application of organic fertilizer and alginic acid improves the stress resistance and quality of Astragalus mongolicus in saline-alkali land
摘要
Abstract
[Objectives]Organic fertilizer and alginic acid have been proved of increasing the stress resistance of crop.We studied the combinations of organic fertilizer rates and alginic acid concentrations on improving the photosynthetic efficiency,stress resistance,yield,and medical quality of A.mongholicus in saline-alkali land.[Methods]A field experiment with a two-factor-three-level complete design was conducted in saline-alkali land for two consecutive years,using seedlings of A.mongholicus as materials.The two factors were organic fertilizer and alginic acid,the three application levels of organic fertilizer were 0,1200,and 2400 kg/hm2(denoted as O0,O1,and O2);and the three application concentration levels of alginic acid(A)were 0,1,and 2 g/L(denoted as A0,A1,and A2).At 60 days after the rejuvenation of A.mongholicus,the leaf photosynthetic parameters,antioxidant enzyme activities,and osmoregulation substance contents were measured.And at 120 days,the yield,and the contentd of medicinal components and heavy metals in A.mongholicus roots were measured.[Results]Compared with O0,O1 and O2 treatment increased the leaf Pn,Tr,and Gs in 2022 and 2023 by 13.6%-29.2%,17.0%-32.3%,and 14.8%-21.2%,enhanced the activities of CAT,SOD,and POD by 10.4%-24.0%,9.5%-13.5%,and 7.5%-29.5%,increased of soluble sugar,soluble protein,and proline contents by 11.0%-28.8%,22.3%-94.3%,and 13.2%-61.4%,and increased the root yields by 3.8%-8.1%,the AIV contents by 7.4%-19.4%and C7G contents by 4.5%-22.7%,and decreased Pb,Cd,As,and Cu contents by 1.4%-16.0%,5.0%-19.5%,5.6%-9.7%,and 11.5%-35.2%,respectively(P<0.05).Compared with A0,A1 treatment significantly increased all the tested photosynthesis parameter values,the activities of antioxidant enzymes,and the contents of osmoregulation substances,significantly enhanced the root yields and medicinal component contents,and decreased Pb,Cd,As,Hg,and Cu contents by 12.0%-22.2%,6.9%-17.1%,7.5%-13.3%,7.1%-18.9%,and 16.1%-21.9%,respectively.In both 2022 and 2023,O2A1 treatment was recorded the highest root yield(6887,and 7153 kg/hm2)while O0A2 treatment was recorded the lowest root yield(6065,and 6278 kg/hm2).Compared with O2A1 treatment,O1A1 increased AIV content by 5.1%-7.2%and C7G content by 5.3%-13.5%.[Conclusions]Both organic fertilizer and alginic acid application showed obvious effect on increasing the stress resistance,root yield and the medicinal composition contents of A.mongholicus,due to the enhanced photosynthetic efficiencies and antioxidant enzyme activities.Satisfactory synergetic effect on yield and quality but low heavy metal content can be obtained at combination rate of organic fertilizer 1200 kg/hm2 with 1.0 g/L of alginic acid to produce A.mongholicusin saline-alkali land.关键词
有机肥/海藻酸/盐碱地/蒙古黄芪/产量/品质Key words
organic fertilizer/alginic acid/saline-alkali land/Astragalus mongholicus/yield/quality引用本文复制引用
刘杰,吴强,赵鹏,王永龙,高雪峰,赵培伟,马斌,范菠菠..有机肥和海藻酸配施提高盐碱地蒙古黄芪抗逆性和品质[J].植物营养与肥料学报,2024,30(4):757-767,11.基金项目
包头师范学院自然科学类青年科研项目(BSYKJ2023-ZQ10) （BSYKJ2023-ZQ10）
宁夏回族自治区农业科技自主创新资金资助项目(NGSB-2021-16-02) （NGSB-2021-16-02）
内蒙古自治区高等学校青年科技人才发展项目(NJYT24051) （NJYT24051）
国家自然科学基金项目(32260027) （32260027）
包头师范学院黄河流域生态保护和高质量发展研究院科研项目(BSYHY202217). （BSYHY202217）
