| Influence of applying organic and inorganic fertilizer on physical and chemical characteristics of sandy soil in paddy field with plastic film bellow in horqin |
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| DOI：10.7606/j.issn.1000-7601.2018.02.07 |
| Key Words: physical and chemical characteristics cation exchage capacity(CEC) available nutrient |
| Author Name | Affiliation | | SONG Gui-Yun | Agricultural college, Inner Mongolia University for Nationalities, Tongliao, Inner Mongolia 028042, China | | WANG Yun | Agricultural college, Inner Mongolia University for Nationalities, Tongliao, Inner Mongolia 028042, China | | FAN Fu | Agricultural college, Inner Mongolia University for Nationalities, Tongliao, Inner Mongolia 028042, China | | ZHANG Qing-guo | Agricultural college, Inner Mongolia University for Nationalities, Tongliao, Inner Mongolia 028042, China | | HOU Mi-hong | Agricultural college, Inner Mongolia University for Nationalities, Tongliao, Inner Mongolia 028042, China | | SUN De-zhi | Agricultural college, Inner Mongolia University for Nationalities, Tongliao, Inner Mongolia 028042, China | | SA Ru-la | Agricultural college, Inner Mongolia University for Nationalities, Tongliao, Inner Mongolia 028042, China |
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| Abstract: |
| It is important to improve soil fertility and organic matter by applying organic and chemical fertilizer. The study will provide a scientific basis for reasonable application of fertilizers of rice in sandy soil with plastic film bellow in Horqin. The samples were collected from original sandy soil (before putting plastic film) and from sandy soil in paddy field with plastic film bellow of 1-year (A1), 5-year (A2) and 10-year (A3) applying organic and inorganic fertilizer, the changes of physical properties (bulk density, porosity and mechanical composition) and chemical properties (total and available nutrient, and CEC, etc.) were studied from those samples. The results indicated that compared with CK, the bulk density of sandy soil decreased by 0.63%～3.80%, and the porosity increased by 2.15%～7.89%. Small grain (2～0.02 mm）content decreased by 1.33%～7.72%, powder particle (0.02～0.002 mm) and clay particle (＜0.002 mm) content increased respectively by 4.44%～21.53% and 0.28～1.76 times under A1, A2 and A3 treatment compared with CK level. The difference of the porosity, powder particles and clay particles content between treatments reached extreme significant level (P<0.01), and the difference of small grain content was significant (P<0.05). The total nitrogen, phosphorus and potassium content in A1, A2 and A3 level increased by 85.42%, 12.00% and 27.91% than that in CK treatment, the difference of those between A1, A2 and A3 treatments reached extreme significant level (P<0.01). Compared with CK treatment, sandy soil organic matter, ammonium nitrogen, nitrate nitrogen, available phosphorus, available potassium, and cation exchange capacity (CEC) in A1, A2 and A3 treatment were improved respectively by 0.12～4.06 g·kg-1, 0.74～3.21 mg·kg-1, 0.25～9.21 mg·kg-1, 0.11～1.10 mg·kg-1, 2.49～16.30 mg·kg-1 and 0.22～6.31 cmol(+)·kg-1, the difference of organic matter and available phosphorus between treatments reached extreme significant level (P<0.01). Through applying organic and inorganic fertilizer, the organic matter、available and total nutrient in sandy soil were all improved clearly, and CEC raised ; at the same time, the bulk density decreased, porosity raised up, and small soil particles appeared more (clayization) than before. The physical and chemical properties, and soil fertility of the sandy soil in a paddy field with plastic film bellow in Horqin were all improved through applying organic and inorganic fertilizer. |
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