[1]LI Yong-sheng,GOU Chun-lin,DU Jian-jun,et al.Interaction Between Water Retaining Agent and Phosphorus Fertilizers and the Effect of Water and Fertilizer Conservation[J].Research of Soil and Water Conservation,2014,21(06):67-71.
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Interaction Between Water Retaining Agent and Phosphorus Fertilizers and the Effect of Water and Fertilizer Conservation
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
21
Number of periods:
2014 06
Page number:
67-71
Column:
Public date:
2014-12-28
- Title:
- Interaction Between Water Retaining Agent and Phosphorus Fertilizers and the Effect of Water and Fertilizer Conservation
- Keywords:
- water retaining agent (WRA); phosphorus fertilizer; interaction; maize
- CLC:
- S143.2
- DOI:
- -
- Abstract:
- Water absorbencies of water retaining agent (WRA) in different solution of ammonium phosphate and super phosphate were determined by tea bag method, and phosphorus adsorption capacities of WRA were determined by the difference of phosphorus amounts in the solution before and after adsorption occurred. The effects of different phosphorus fertilizers on water absorbent characteristics of WRA and nutrients adsorption by WRA were studied. Maize was used as the tested crop in a pot experiment to study the effect of water and fertilizer conservation when WRA and different phosphorus fertilizers were applied in combination. The results showed that the water absorbency of the WRA decreased obviously along with the increase of concentrations of various phosphorus fertilizers. Calcium super phosphate had much stronger influence on the water absorbeency of WRA. While WRA absorbed water, it could also absorb phosphate in the solution. With the increase of concentrations of fertilizers, phosphorus adsorption capacity increased at the first stage and then decreased at the second stage. WRA and phosphorus fertilizers applied in combination could obviously increase the net photosynthetic, stomatal conductance and bioyield, as well as phosphorus use efficiency and WUE. WRA and ammonium phosphate applied in combination had the best effect of water and fertilizer conservation.
- References:
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