Influence Of Planting Years On Soil Physico And Chemical Properties And Fruit Quality Of Jujube Orchards In Sandy Areas

This paper studied the dynamic change of soil p Hysicochemical properties,nutrient content ofleaves and fruits quality in 8 years,13 years and 17 years orchards,which come from the 224thcorps of the 14 th Division in Hotan area of Xinjiang.The aim was that the influence of jujube planting years was comprehended on soil improvement,tree nutrition and fruit quality in sandy are as.And which will provides a theoretical reference on evaluation of the construction effectiveness adopted jujube ecological economic forest in sandy areas of southern Xinjiang.The main conclusio ns were as follows:(1)With the increase of planting years,the change trend of soil bulk density showed "rising-falling-rising" in the 30-60 cm soil layer,but the trend of other soil layers showed "first falling and then rising".The change of soil porosity is exactly opposite to the change of bulk density in each soil layer.The soil water content of three orchards showed that 13-year-old jujube orchard>8-year-old jujube orchard>17-year-old jujube orchard>CK.(2)With the increase of planting years,The trends on content of p H and water-soluble salt in soil showed “First decreasing and then rising”,but that of in soil between rows was opposite.Among between rows,the trend of p H was incremental along with the planting years increasing.(3)With the increase of planting years,the contents of soil organic carbon,alkali-hydrolyzabl e nitrogen and available p Hosp Horus in within row and between rows were totally 13-year-old jujube garden>17-year-old jujube garden>8-year-old jujube garden>CK.and 13-year-old jujube garde n>17-year-old jujube garden>8-year-old jujube garden,the content of available potassium was as follows: 13-year-old jujube orchard>8-year-old jujube orchard>17-year-old jujube orchard>CK,and13-year-old jujube orchard>8-year-old jujube orchard>17-year-old jujube orchard.(4)With the increase of planting years,the total nitrogen and total p Hosp Horus contents of leaves were generally as follows: 8-year-old jujube garden>17-year-old jujube garden>13-year-old jujube garden.But the trengs on total potassium content leaves,and nitrogen,p Hosp Horus and potassium contents infruits were the same as,which were as follows: 8-year-old jujube orchard>13-year-old jujube orchard>17-year-old jujube orchard.(5)With the increase of planting years,the longitudinal diameter,transverse diameter and single fruit weight of the fruit 13-year-old jujube garden>8-year-old jujube garden>17-year-old jujube garden,And the fruit shape index as follows: 8-year-old jujube orchard>13-year-old jujube orchard>17-year-old jujube orchard.In there 0rchards the contents of vitamin C,soluble sugarand titratable acid were the highest in 17-year-old jujube orchards,that of 13-year-old jujube orchards was intermediate,and that of 8-year-old jujube orchards was lowest.