不同水氮处理对果树幼苗生长和耗水特性的影响

张志亮; 张富仓; 郑彩霞; 倪福全

Effects of different water and nitrogen treatment on growth and water consumption characteristics of fruit seedlings

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DOI：10.7606/j.issn.1000-7601.2009.06.10

Key Words: water nitrogen fruit seedling growth water consumption

Author Name	Affiliation
ZHANG Zhiliang	College of Information and Technology Sichuan Agricultural University， Ya’an， Sichuan 625014， China；Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education Northwest A ＆F University, Yangling, Shaanxi 712100, China
ZHANG Fucang	Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education Northwest A ＆F University, Yangling, Shaanxi 712100, China
ZHENG Caixia	College of Information and Technology Sichuan Agricultural University， Ya’an， Sichuan 625014， China；Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education Northwest A ＆F University, Yangling, Shaanxi 712100, China
NI Fuquan	College of Information and Technology Sichuan Agricultural University， Ya’an， Sichuan 625014， China

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Abstract:

With pot experiment,the growth,transpiration rate,water consumption characteristics and water use efficiency(WUE) of three fruit seedlings were investigated under different water and nitrogen fertilizer treatments.The results showed that water consumption are obviously different among three fruit seedlings;the water consumption of peach seedling is the maximum in three fruit seedling under W2N1 combination condition.The daily transpiration of peach,apple and pear account for 22.4%,18% and 35.7% of daily consumption of water in sunny day and it increased by 0.5%,8% and 22.6% than in cloudy day,respectively.The transpiration rate of three fruit seedling during the night of sunny day was 3.26±0.37 g(apple),4.0±1.41 g(pear) and 4.63±1.8 g(peach).The transpiration rate of peach seedling is relatively largeer in three seedlings under the same treatment.The accumulation of water consumption and WUE were enhanced with the increase of the amount of nitrogen fertilizer applied.The peach seedling was most obvious on accumulation range of growth,such as height and stem diameter.Effects of water and nitrogen on dry biomass reached a significant level.Dry biomass rose with the increase of water and nitrogen.It not only guaranteed the normal physiological growth but also increased water use efficiency when the water rate was in a range of 60%～70% of the field capacity.