Effects of Addition of Sand on the Physical and Chemical Properties of the Hexi Corridor Soil and Growth and Yield of Cabbage
The aim of the experiment was to determine the effects of addition of sand on the physical and chemical properties of the soil of Hexi Corridor oasis.The experiment was conducted in the field of the vegetable industry park of Nanhua Town in Gaotai County,which is located in the middle of Hexi Corridor.The soil was mixed with the fine river sand at 0 ～ 20cm depth before the ridges were prepared and covered with plastic film.The soil physical and chemical properties,growth and yield of cabbage were determined and the economic analysis was also carried out after harvest.The results showed that the soil bulk density,pH and EC,and the contents of total phosphorus,available phosphorus,available potassium and alkalytic nitrogen were decreased by adding sand to soil compared with the control,and the above parameters of 20-m3 treatment was decreased by 7.77％,2.35％,6.75％,13.74％,11.91％,25.34％ and 19.82％,respectively.However,the total porosity,aeration porosity,the content of organic matter and total nitrogen were increased under the different sand treatments.Compared with control,those of the 20-m3 sediment treatment increased by 7.10％,48.74％,50.52％ and 29.10％,respectively.After the soil was mixed with sand,the leaf height,the diameter and the compactness of the cabbage were increased,the center column was shortened,the yield increased and the plasticity index increased obviously.Under treatment with adding sand of 20 m3 · 667m-2,the average plasticity index increased by 1.248％ and yield increasing by 8.83％ compared with the control.In addition,the growth index and yield of Brassica oleracea were significantly correlated with soil physical and chemical properties.The meta-analysis results showed that adding sand of 20 m3 · 667m-2 was appropriate for the improvement of irrigation cultivation in the soil of the Hexi Corridor oasis of Gansu Province,and provided a theoretical basis for the improvement of cultivated land in the future.
Hexi Corridoroasis irrigation areasand mixingsoil physical and chemical propertiescabbage
国家科技期刊平台
NSTL
万方数据
维普
