| Effects of irrigation threshold and fertilization on growth, yield and physiological properties of fertigated tomato in greenhouse |
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| DOI：10.7606/j.issn.1000-7601.2013.01.15 |
| Key Words: irrigation threshold fertigation growth yield phot
osynthetic characteristic water use efficiency(
WUE) |
| Author Name | Affiliation | | YUAN Yuxia | Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education/Institute of Water-saving Agriculture in Arid Areas of China, Northwest A & F University, Yangling, Shaanxi 712100, China | | ZHANG Fucang | Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education/Institute of Water-saving Agriculture in Arid Areas of China, Northwest A & F University, Yangling, Shaanxi 712100, China | | ZHANG Yan | Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education/Institute of Water-saving Agriculture in Arid Areas of China, Northwest A & F University, Yangling, Shaanxi 712100, China | | SUO Yansong | Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education/Institute of Water-saving Agriculture in Arid Areas of China, Northwest A & F University, Yangling, Shaanxi 712100, China |
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| Abstract: |
| For the purpose of exploring the effective mode of
fertigation in greenhouse, the experiment was conducted to analyze the effects
of different irrigation threshold and fertilization on growth, physiological pro
perties and yield of tomato. There were three irrigation threshold treatments in
cluding W1 (65%θF), W2 (75%θF) and W3 (85%θF), and three
fertilization treatments including F1 (low)
, F2 (middle) and F3 (high). The results showed that the growth, yield and physi
ological properties of tomato could be modified by different irrigation threshol
d and fertilization. Under certain irrigation threshold, the plant height, leaf
area, photosynthesis and transpiration rate, dry matter production and yield of
tomato could be significantly increased along with the increase of fertilization
amount, while excessive fertilization was detrimental to the growth, dry matter
accumulation and yield improvement of tomato. Under certain fertilization amoun
t, the plant height, leaf area and dry weight of tomato could be improved by rat
ional increase of irrigation threshold, while excessive irrigation threshold was
not conducive to the growth, photosynthetic rate and yield improvement of tomat
o. The treatment of W2F2 was most conducive to the growth, dry matter accumulati
on, yield and water use efficiency of tomato. The experiment also showed that, u
nder different water and fertilization treatments, there was a significant linea
r correlation between the yield and dry matter weight as well as leaf net photos
ynthetic rate, and there was a significant quadratic parabola correlation betwee
n the leaf water use efficiency and net photosynthetic rate. |
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