Effects of Different DA-6 Concentrations and  Application Methods on Growth of Spinach(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Title:: Effects of Different DA-6 Concentrations and  Application Methods on Growth of Spinach

Author(s):: SUN Xiaohui1; 2; LI Chengliang1; CHEN Jianqiu3; LIU Longfei1; WANG Qiushuang1; YANG Fan1; (1.National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer，College of Resources and Environment，Shandong Agricultural University,Tai′an，Shandong 271018;2.Liaocheng Product Quality Supervision & Inspection，Liaocheng，Shandong 252000;3.Kingenta Ecological Engineering Group Co.Ltd.，Linyi，Shandong 276700)

Abstract:: Taking spinach as test material，the effects of different DA-6 concentrations(0，5，10 mg?kg-1)and application methods(bottom application and spraying)on yield，quality and physiological characteristics of spinach were studied by pot experiment.The results showed that the yield of spinach was increased with increasing DA-6 concentration，and the quality of spinach was also improved.Compared with the CK1(basal application of DA-6 concentration was 0 mg?kg-1)，the spinach yield with 5,10 mg?kg-1 DA-6 concentration were increased by 53.05% and 61.64%，and the biomass were enhanced by 14.25% and 17.82%，the vitamin C content of leaf were increased by 14.17% and 34.90%，respectively.10 mg?kg-1 DA-6 treatment decreased by 27.14% of nitrogen content in spinach leaf under the control treatment，and enhanced the spinach chlorophyll content and chlorophyll fluorescence characteristics，and promoted root growth.But there was no significant difference of the total nitrogen content in spinach plants between 10 mg?kg-1 DA-6 treatment and the control;5,10 mg?kg-1 DA-6 spraying treatments significantly reduced yield and biomass of spinach in comparison with the CK2 (the concentration of DA-6 was 0 mg?kg-1)，the vitamin C content in leaf was decreased while the nitrogen content in leaf increased.Therefore，the basal application of 10 mg?kg-1 DA-6 could not only improve the yield of spinach,but also enhance the quality of spinach.

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Last Update: 2017-07-18