| Research on characteristics of nutrient uptake and operation of oilseed sunflower in alkaline soil |
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| DOI：10.7606/j.issn.1000-7601.2012.03.22 |
| Key Words: alkaline soil oilseed sunflower nutrient uptake and operation |
| Author Name | Affiliation | | CHEN Shujuan | College of Agriculture, Ningxia University,Yinchuan, Ningxia
750021, China
Agriculiure and Animal Husbandry Bureau, Huinong district, Shizuishan, Ningxia 753600, China | | HE Wenshou | College of Agriculture, Ningxia University,Yinchuan, Ningxia
750021, China |
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| Abstract: |
| The aim of the study was to investigate the characteristics the dynamie changes, operation and distribu-tion of NPK nutrients in the organs of oil sunflower plant body in salinity-alkalinity stress conditions. In combination of soil test with field test method, a research was carried out on the charaeteristics of NPK nutrient uptake and operation of sunflower in alkaline soil in Qianjin farm. The results show that the dynamie changes of NPK contents in the aerial part of oilseed sunflower present a decreasing trend shaped as opposite“S”curve, which changed with the change of fertiliza-tion level and growth stage. The dynamie changes of NPK contents in various organs of oilseed sunflower plant in alkaline soil show different trends in various fertilization levels and growth stages. Mo matter with or without fertilization, the totaln NPK absorption of the organs of oilseed sunflower is as follows: N:leaf>dise>stem>root>seed, P:disc>stem>leaf>seeds>root, K:stem>disc>leaf>root>seed. |
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