|Table of Contents|

Simulation of Water Productivity and Soil Water Use of Different Planting Density Apple Orchard(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2015年16
Page:
27-33
Research Field:
Publishing date:

Info

Title:
Simulation of Water Productivity and Soil Water Use of Different Planting Density Apple Orchard
Author(s):
GUO Zheng1; LI Jun2; ZHANG Yujiao2; CAO Yu2; ZHANG Lina1; FAN Peng1
(1.College of Forestry，Northwest Agriculture and Forestry University，Yangling，Shaanxi 712100；2.College of Agronomy，Northwest Agriculture and Forestry University，Yangling，Shaanxi 712100)
Keywords:
apple orchard; planting density; yield; soil desiccation; WinEPIC model
PACS:
-
DOI:
10.11937/bfyy.201516006
Abstract:
Taking apple orchards under six different planting density treatments during 1965—2009 at Luochuan as research object.The WinEPIC model was used to simulated the dynamic changes of water productivity and deep soil desiccation of apple orchards.The results showed that simulated annual apple yield of different density apple orchards increased in the early growth stage and then decreased with fluctuation in Luochuan.The higher planting density，the higher annual yield was obtained at early growth stage，but the yield at late growth stage was decreased more for excessive consumption of soil water.Water stress days of apple orchards showed a growth trend which was opposed to the change trend of annual rainfall.With planting density increasing，water stress occurred earlier and water stress days got larger，simulated annual available soil water amounts in 0-15 m soil layer of apple orchards decreased.The higher planting destiny of treatment had，the faster increasing rate of desiccated soil layer depth could have and the earlier time for desiccated soil layer occurred as well.To summarize，taking yield and sustainable utilization of soil water into consideration，it suggested the suitable planting densities of apple orchards was 833-1 000 plants/hm2 and reasonable years for soil water sustainable use was 20-25 years in Luochuan.

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Last Update: 2015-09-01