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- Title
秸秆还田量对东北旱地土壤磷素淋溶及玉米产量的影响.
- Authors
刘晓辉; 高晓梅; 于淼; 李杨; 敖静; 孙玉禄; 王智学
- Abstract
To investigate the effects of straw returning amount on phosphorus vertical distribution in soil and maize yield in dryland of Northeast China, the random block design was used in maize cultivation experiment. The conventional fertilization was used as control(CK);and different treatments of straw returning amounts were set, including 0.25, 0.50, 0.75, 1.00, 1.25 and 1.50 kg·m-2. The contents of total phosphorus(TP)and available phosphorus(AP)in different soil layers(0--90 cm), the cumulative leaching loss of leachate, and maize yield were determined. The results showed that the contents of TP and AP in soil decreased from top to bottom. Compared with CK, P migration decreased with the increase of straw returning amount. And the effect of straw returning amount on P migration was significant, which the contents of TP and AP in leaching solution significantly decreased with 12.93%~ 59.85% and 11.22%~46.28% of TP and AP, respectively. The yield of maize was significantly affected by straw returning amounts, and the highest yield was obtained when the straw returning amount was 0.75 kg·m-2, which was 14.61% higher than CK. In conclusion, the straw returning field could increase the content of available phosphorus, decrease the leaching loss of soil phosphorus, and increase the yield of maize, which provided theoretical basis for the control of agricultural non-point source pollution.
- Subjects
NONPOINT source pollution; SOIL leaching; AGRICULTURE; PHOSPHORUS in soils; SOIL erosion
- Publication
Journal of Agricultural Science & Technology (1008-0864), 2022, Vol 24, Issue 10, p154
- ISSN
1008-0864
- Publication type
Article
- DOI
10.13304/j.nykjdb.2021.0662