论文部分内容阅读
田间和温室试验表明,给生长于不同含盐量下的肯塔基草地早熟禾(Poa pratensis L.cv.Plush)施用海藻提取剂、三唑类杀菌剂和Fe后,可减缓咸水灌溉对草坪草的不良影响。实验1中的处理剂量为:海藻提取剂(SE)38L/hm~2、Propiconazole[1-{2-(2,4-二氯苯基)-4-丙基-1,3-二氧戊环-2基}甲基-1-氢-1,2,4-三唑](PPC)1.8L/hm~2有效成分、螯合Fe(Na-二乙烯-三胺-五乙酸根-螯合Fe)4.7kg/hm~2有效成分。实验2中的处理剂量为:海藻提取剂56L/hm~2、螯合Fe2.2kg/hm~2有效成分。在实验1及实验2中,于处理后的2周将取自田间小区中的塞植材料移植到4L的金属钵中。对所移植的塞植材料,分别用含0,0.15和0.3Sm~(-1)NaCl的盐溶液浇灌7周。随着盐浓度的增大,叶水分胁迫加剧、刈剪物干重和根量降低。高盐度胁迫下,PPC能增加叶子的重量,除Fe外的各处理均能刺激根的生长。高盐度下,PPC处理植株的根系量最大。在实验2中,CPC对促进根系的生长最为有效。结果表明,所选用的几种物质对生长于盐渍环境下的肯塔基草地早熟禾有潜在的应用价值。
Field and greenhouse experiments showed that the application of seaweed extract, triazole fungicides and Fe to Kentucky bluegrass (Poa pratensis L.cv.Plush) grown at different salinity reduced salt water irrigation on turfgrass The adverse effects. The treatment doses in Experiment 1 were: seaweed extractant (SE) 38 L / hm ~ 2, Propiconazole [1- {2- (2,4- dichlorophenyl) -4-propyl- 2-yl} methyl-1-hydro-1,2,4-triazole] (PPC) 1.8L / hm ~ 2 active ingredient, chelated Fe (Na- divinyl-triamine- pentaacetate- Combined Fe) 4.7kg / hm ~ 2 active ingredients. The treatment dose in experiment 2 is as follows: seaweed extractant 56L / hm ~ 2, chelating Fe2.2kg / hm ~ 2 active ingredient. In Experiment 1 and Experiment 2, the implanted material from the field plot was transplanted into a 4 L metal bowl two weeks after the treatment. The transplanted implants were respectively watered with salt solution containing 0, 0.15 and 0.3Sm ~ (-1) NaCl for 7 weeks. With the increase of salt concentration, leaf water stress aggravated, and the dry weight and root mass of cuttings decreased. Under high salinity stress, PPC increased leaf weight, and all treatments except Fe stimulated root growth. Under high salinity, the root volume of PPC-treated plants was the largest. In Experiment 2, CPC was most effective in promoting root growth. The results showed that the selected materials had potential application value to Kentucky bluegrass growing in saline environment.