| Dry matter and nitrogen accumulation distribution onIsland cotton and upland cotton |
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| DOI：10.7606/j.issn.1000-7601.2017.05.26 |
| Key Words: upland cotton island cotton dry matter nitrogen |
| Author Name | Affiliation | | LI Chun-yan | Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China | | WEN Ru-yi | Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China | | SHI Hong-liang | Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China | | YAN Qing-qing | Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China | | ZHANG Ju-song | Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China |
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| Abstract: |
| The Xinluzhong No.75, Xinluzhong No.54, Xinhai No.35 and Xinhai No.48 were used as material in study on upland cotton and island cotton under the same management conditions to investigate the dry matter accumulation, nitrogen absorption and distribution characteristics. The results showed that the upland cotton dry matter accumulation amount in the whole growth period was higher than that of sea island cotton, reproductive organ dry matter percentage in the early growth period was less than that of sea island cotton, later became larger than that of the sea island cotton; nitrogen accumulation amount in the whole growth period of upland cotton were greater than that of sea island cotton, reproductive organ dry matter and nitrogen accumulation ratios in early growth stage for upland cotton is smaller than that of sea island cotton, later becoming larger than sea island cotton. Compared with vegetative organs of upland cotton, dry matter and nitrogen accumulation of the sea island cotton which is not conducive to the growth stage of reproductive organ dry matter accumulation and distribution, thus affecting the yield of cotton. Therefore, in the field management, attention need to be paid on the management of water and fertilizers of island cotton during the late growth stage. |
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