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Water Consumption Rule for Greenhouse Flowering Chinese Cabbage Based on Weighing Lysimeter(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2017年16
Page:
85-90
Research Field:
Publishing date:

Info

Title:
Water Consumption Rule for Greenhouse Flowering Chinese Cabbage Based on Weighing Lysimeter
Author(s):
XU Zheng1; 2; LI Yinkun1; 3; GUO Wenzhong1; 3; LI Haiping2; LI Lingzhi2; GAO Ruoxing2
(1.National Research Center of Intelligent Equipment for Agriculture，Beijing 100097；2.College of Horticulture，Shanxi Agricultural University，Taigu,Shanxi 030801；3.Beijing Engineering Research Center，Beijing 100097)
Keywords:
weighing lysimeter; greenhouse flowering Chinese cabbage; irrigation amount; evapotranspiration rate; water use efficiency
PACS:
-
DOI:
10.11937/bfyy.20170354
Abstract:
Flowering Chinese cabbage was used as material，based on the water surface evaporation (Ep)，with the evaporation pan in diameter 20 cm of weighing lysimeter,evaporation，transpiration rate，yield，biomass and water use efficiency of greenhouse flowering Chinese cabbage under different irrigation treatments about 0.6Ep，0.7Ep，0.8Ep，0.9Ep were studied.In order to explore the rule of water consumption of greenhouse flowering Chinese cabbage，clear the reasonable irrigation amount of greenhouse flowering Chinese cabbage.The results showed that the diurnal variation of transpiration was 0.73-3.52 mm?d-1 in the whole growth period.The average evapotranspiration rates in early and late stages were 1.43 mm?d-1，2.04 mm?d-1,which showed a steady change in the early period，a dramatic changes in late period.The evapotranspiration increased with increase of irrigation amount．The evapotranspiration during the whole growth period of greenhouse flowering Chinese cabbage was 65.98-78.92 mm．Among them，the irrigation amount of 0.7Ep on the yield，biomass，yield water use efficiency and biomass water use efficiency were the highest，compared with treated 0.6Ep，treated with 0.8Epand treated with 0.9Ep，yield increased by 25.16%（P<0.05），5.63%and 13.76%（P<0.05），water use efficiency of yield increased by 17.42%（P<0.05），8.48%and 27.66%（P<0.05），biomass respectively increased by 21.96%（P<0.05），7.41% and 17.68%（P<0.05），water use efficiency of biomass increased by 11.21%,10.32% and 32.10%（P<0.05）.So 0.7Ep was the optimal irrigation amount of greenhouse flowering Chinese cabbage under the test conditions．

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Last Update: 2017-08-31