| Effect of saline water soil nutrients and ions content of greenhouse tomato under different irrigation methods |
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| DOI：10.7606/j.issn.1000-7601.2018.02.15 |
| Key Words: saline water irrigation method soil mineral elements |
| Author Name | Affiliation | | TIANG Ping | Agricultural College, Ningxia University, Yinchuan, Ningxia 750021, China | | LI Juan | Agricultural College, Ningxia University, Yinchuan, Ningxia 750021, China | | LI Jian-she | Agricultural College, Ningxia University, Yinchuan, Ningxia 750021, China | | GAO Yan-ming | Agricultural College, Ningxia University, Yinchuan, Ningxia 750021, China | | REN Hui | Agricultural College, Ningxia University, Yinchuan, Ningxia 750021, China | | CAO Shao-na | Agricultural College, Ningxia University, Yinchuan, Ningxia 750021, China |
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| Abstract: |
| single factor randomized block experiment was conducted with direct irrigation with saline water (EC=3 mS·cm-1) as control. Therewere five treatments in total including CK: saline water direct irrigation , T1: fresh water irrigation, T2: well mixed water irrigation(saline water: freshwater=1∶1), T3: Saline water and fresh water rotation irrigation according to plant growth periods, T4: saline water, freshwater irrigation in sequence respectively, to study effect of saline water on contents of soil mineral elements in tomato root zone at fruit-set periods, full bearing period, later stage of full bearing period of different irrigation method of saline water, to provide a theory references to rational and secure use of saline water. Results showed that: Several irrigation methods of saline water can increase contents of total salts, available K and HCO3-、SO42-、Mg2+、Na+ of soil at three growth period of tomato; CK treatment can improve the content of soil total N, available N at tomato furit-set and late growth period, decrease total N, available N at tomato full bearing period, decrease total P, available P at every period remarkably respectively. T1 treatment can get a higher total P and available P content of soil at the three periods, and soil total N content was the highest at full bearing period. T2 treatment can improve the content of Fe, Mn, Zn, Cu of root zone soil of tomato. At the three periods, the content of total and available nutrients of tomato root zone soil was between two parties, the content of salt ions have no significant difference with T2 and T4 treatment, and the T4 treatment was the lowest on the whole. Compared with T1, T4 treatment also can improve the content of total and available nutrients. In conclusion, saline water, freshwater irrigation in sequence (T4) is a comparatively rational and secure use pattern of saline water. |
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