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- W2372381310 abstract "The sunflower fertilizer field experiment was conducted at different places in Ningxia to investigate its nitrogen,phosphorus and potassium nutrient content and dry matter accumulation at different growth stages and different organs and to analysis the characteristics of N,P and K uptake at different growth stages of confectionary sunflower and oilseed sunflower in Ningxia.The results showed that application of N,P and K fertilizers remarkably increased weights of dry matters,N P and K contents and accumulates.Whatever fertilization levels,dry matter accumulate increased with the growth stage and showed a typical S-shape,The peaks of dry matter accumulation occurred at budding to blooming stages.The contents of N,P and K in plants in a lager changes at different growth stages,but the overall trend is higher than the late pre-reproductive,the contents falling off with growth stages.The amount of N,P and K absorption in confectionary sunflower and oilseed sunflower are different,the absorption of N in various organs of whole growing stage in confectionary sunflower was: leaf stem seed disk;P was: seed leaf stem disk;K was: tem leaf disk root.The absorption of N in various organs of whole growing stage in oilseed sunflower was: leaf seed stem disk;the absorption of P and K in various organs are same of confectionary sunflower.Budding to blooming stages was the highest absorbed stages in N of confectionary sunflower,P and K were blooming stage.The absorption of N,K peak in the blooming stage,P was blooming to maturity stage of oilseed sunflower.Under all experimental condition,producing every 100 kg seeds of confectionary sunflower needed 3.8～4.9 kg N,1.5～2.1 kg P2O5 and 8.9～10.3 kg K2O.Producing every 100 kg seeds of oilseed sunflower needed 3.5～4.6 kg N,1.6～2.1 kg phosphorus P2O5 and 6.9～9.2 kg potassium K2O." @default.
- W2372381310 created "2016-06-24" @default.
- W2372381310 creator A5052756054 @default.
- W2372381310 date "2009-01-01" @default.
- W2372381310 modified "2023-09-25" @default.
- W2372381310 title "Characteristics of Nitrogen,Phosphorus and Potassium Uptake at Different Growth Stages of Sunflowers in Ningxia" @default.
- W2372381310 hasPublicationYear "2009" @default.
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