摘要
以京育1号为试材，研究了不同水、肥供应对西北地区结球甘蓝产量、品质、水分利用效率和氮肥利用效率的影响。结果表明：比当地传统灌水量灌水下限降低10%灌溉（1960 m3·hm-2）和节肥20%施肥量（氮304 kg·hm-2、磷204 kg·hm-2和钾72 kg·hm-2）处理的结球甘蓝VC、可溶性糖含量和游离氨基酸含量较高，硝酸盐含量较低，均显著优于当地传统灌溉施肥处理；水分利用效率较高，氮素表观利用效率最高；经济产量和生物产量分别为91、132 t·hm-2，虽然与当地传统灌溉施肥处理无显著差异，但有节水节肥、保护环境的优势。综合评价，比当地传统灌水量灌水下限降低10%的灌溉和比当地传统施肥量节肥20%的施肥组合为较适宜当地结球甘蓝生长的水肥供应方案。
Abstract
Taking wild cabbage(Brassica oleracea L. var. capitata L.)cultivar‘Jingyu No.1’as test material,studied the effects of different water and fertilizer supplies on yield,quality,water and nitrogen use efficiencies of wild cabbage cultivated in north west area of China.The results showed that compared with the tranditional irrigation,10% irrigation(1 960 m3·hm-2)were reduced,20% fertilizer(N 304 kg·hm-2,P 204 kg·hm-2,K 72 kg·hm-2)were saved,the contents of VC,soluble sugar and free aminoacid of wild cabage in the treatment were higher,while the nitrate content was lower.The treatment was significantly superior than the local tradition irrigation and fertilizer treatments.The water use efficiency was higher and apparent nitrogen use efficiency was the highest.The economic yield and biomass yield was 91 t·hm-2 and 132 t·hm-2,respectively. Although there were no significant differences with the local tradition irrigation and fertilizer treatment,it had the advantages of saving water,saving fertilizer,and protecting environment.Comprehensive evaluation indicated that this combined treatment could reduce 10%irrigation and save 20%fertilizer,was a better water and fertilizer supplying scheme appropriate for local wild cabbage growth and fit to be extended in areas with similar conditions.
基金项目
国家自然科学基金(31260473)
国家现代农业产业技术体系建设资金资助项目(CARS-25-C-07)
国家科技期刊平台
NSTL
维普
万方数据