Optimisation of phosphorus fertilisation promotes biomass and phosphorus nutrient accumulation, partitioning and translocation in three cotton (Gossypium hirsutum) genotypes
文献类型： 外文期刊
作者： Chen, Bolang 1 ; Wang, Qinghui 2 ; Ye, Zupeng 1 ; Stiles, Shane 3 ; Feng, Gu 4 ;
作者机构： 1.Xinjiang Agr Univ, Coll Grassland & Environm Sci, Xinjiang Key Lab Soil & Plant Ecol Proc, Urumqi 830052, Xinjiang, Peoples R China
2.Xinjiang Acad Agr Sci, Agr Mechanisat Inst, Urumqi 830091, Xinjiang, Peoples R China
3.South Dakota State Univ, Biol & Microbiol Dept, Brookings, SD 57007 USA
4.China Agr Univ, Coll Resources & Environm Sci, Beijing 100193, Peoples R China
关键词： biomass partitioning; phosphorus remobilisation
期刊名称：CROP & PASTURE SCIENCE （ 影响因子：2.286； 五年影响因子：2.507 ）
ISSN： 1836-0947
年卷期： 2020 年 71 卷 1 期
页码：
收录情况： SCI
摘要： Limited information is available on accumulation, distribution, and remobilisation of dry matter (DM) and nutrients in cotton (Gossypium hirsutum L.) under the interaction of nutrient management and genotype. We conducted a 2-year field experiment to study the impacts of phosphorus (P) treatments (0, 16.5, 33, 66, 132 and 198 kg P ha(-1)) on growth and P absorption, allocation and remobilisation in three cotton genotypes. At maturity, the maximum DM and P content allocation to seeds were 20.7% and 62.3%, respectively. Compared with the anthesis stage, leaf DM and P content at maturity significantly decreased by 46.3% and 73.6%, respectively; thus, seed P content was mainly contributed by leaves. Compared with the control (nil P), optimal P fertilisation (33-66 kg P ha(-1)) increased leaf DM and P content at anthesis by 21.2% and 40.8%, promoted P translocation from leaves to seeds by 43%, and improved lint yield at maturity by 22.8%. At anthesis and maturity, the DM and P content of the entire plant, and lint and seed yields were higher in genotypes XLZ57 and XLZ19 than in XLZ13. Suitable P doses increase DM and P accumulation and yield, and improve source-sink relationships of DM and P in cotton.
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