| 水稻高产群体的营养平衡 |
| |
| 作者姓名： | WANG Bo-Lun LIU Xin-An YU Gui-Rui SU Zheng-Shu WANG Su |
| |
| 作者单位： | [1]InstituteofSoilandFertilizer,CineseAcademyofAgrculturalSciences,Beijing100081,China [2]InstituteforAppli,CineseAcademyofAgrculturalSciences,Beijing100081,China |
| |
| 基金项目： | *1Project (No.39070542) supported by the National Natural Science Foundation of China. |
| |
| 摘 要： | Sulfur transformation in 3 soils maintained in a closed incubation system and its availability to plants were investigated using carrier-free ^35S-SO4^2- and ^35S-labeled ryegrass straw.For carrier-free Na2^35SO4 treatment,78%,70%and 64% of ^35S applied were found in Ca(H2PO4)2-extractale S fraction,4%,5% and 7% in slowly soluble inorganic S,11%,15%and 18%in C-O-S,5%,7%,and 6% in C-bonded S,and 5%,7% and 6% in unidentified organic S120 days after incubation in black soil,cinnamon soil and chestnut soil,respectively.Most of 35S uptake by plants came from extractable 35SO4^2-,and little from C-O-^35S and C-bonded ^35S,In the treatment with 35S-labeled straw,51%,46%and 36% of 35S incorporated were found in Ca(H2PO4)2-extractable S fraction,7%,6% and 7% in slowly soluble inorganic S,13%,15%and 18% in C-O-S,8%,8%and 6% in C-bonded S,and 18%,25%and 35% in unidentified organic S at the end of incubation in above-mentoned three soils,respectively.Higher availability of C-O-35S,C-bonded 35S and unidentified organic 35S from 35S-labeled straw was observed in 35S-labeled straw treatment compared to carrier-free Na2^35SO4 treatment.
|
| 关 键 词： | 北方 高地 土壤缺硫 ^35S 有效性 硫转化 |
Nutritive equilibrium in rice plant populations for high yield |
| |
| WANG Bo-Lun,LIU Xin-An,YU Gui-Rui,SU Zheng-Shu,WANG Su.Nutritive equilibrium in rice plant populations for high yield[J].Pedosphere,1999,9(1):77-82. |
| |
| Authors: | WANG Bo-Lun LIU Xin-An YU Gui-Rui SU Zheng-Shu and WANG Su |
| |
| Institution: | [1]InstituteofSoilandFertilizer,CineseAcademyofAgrculturalSciences,Beijing100081,China [2]InstituteforAppli,CineseAcademyofAgrculturalSciences,Beijing100081,China |
| |
| Abstract: | Sulfur transformation in 3 soils maintained in a closed incubation system and its availability to plants were investigated using carrier-free ^35S-SO4^2- and ^35S-labeled ryegrass straw.For carrier-free Na2^35SO4 treatment,78%,70%and 64% of ^35S applied were found in Ca(H2PO4)2-extractale S fraction,4%,5% and 7% in slowly soluble inorganic S,11%,15%and 18%in C-O-S,5%,7%,and 6% in C-bonded S,and 5%,7% and 6% in unidentified organic S120 days after incubation in black soil,cinnamon soil and chestnut soil,respectively.Most of 35S uptake by plants came from extractable 35SO4^2-,and little from C-O-^35S and C-bonded ^35S,In the treatment with 35S-labeled straw,51%,46%and 36% of 35S incorporated were found in Ca(H2PO4)2-extractable S fraction,7%,6% and 7% in slowly soluble inorganic S,13%,15%and 18% in C-O-S,8%,8%and 6% in C-bonded S,and 18%,25%and 35% in unidentified organic S at the end of incubation in above-mentoned three soils,respectively.Higher availability of C-O-35S,C-bonded 35S and unidentified organic 35S from 35S-labeled straw was observed in 35S-labeled straw treatment compared to carrier-free Na2^35SO4 treatment. |
| |
| Keywords: | high yield nutritive equilibrium rice plant populations |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《土壤圈》浏览原始摘要信息 |
| 点击此处可从《土壤圈》下载免费的PDF全文 |
|
