追施不同形態(tài)氮肥對(duì)不同鉀效率基因型棉花生長(zhǎng)及產(chǎn)量品質(zhì)的影響
[Abstract]:[objective] to study the effects of nitrogen fertilizer forms on cotton growth, potassium uptake and utilization, yield and quality at high and low potassium supply levels. [methods] Liaomian18, a high potassium efficient cotton variety, was selected. Jimian 958 and Xinmian99B, a low potassium cotton cultivar, were cultured in nutrient bowl. Two potassium supplying levels, 38.01mg kg~ (-1) and 152.24 mg kg~ (-1), were set up. Two forms of nitrogen fertilizer, ammonium sulfate fertilizer (ammonium sulfate) and nitrate fertilizer (calcium nitrate), were applied. [results] insufficient potassium supply could reduce the number of bolls per plant and dry matter accumulation and potassium accumulation of cotton under high potassium treatment. Potassium utilization index and yield were significantly higher than those of low potassium treatment. Compared with the application of nitrogenous nitrogen, the application of ammonium fertilizer could reduce the height of cotton plant, the number of fruit branches and the number of bolls per plant, the yield of seed cotton and the accumulation of total dry matter. The uptake and utilization of potassium in cotton treated with top dressing ammonium nitrogen fertilizer was significantly lower than that in top dressing nitrogen fertilizer treatment. [conclusion] potassium inefficient genotypic cotton was more sensitive to top applied ammonium nitrogen fertilizer when potassium supply was insufficient. The later the cotton matured, the greater the nitrogen form of topdressing fertilizer.
【作者單位】: 中國(guó)農(nóng)業(yè)科學(xué)院棉花研究所/棉花生物學(xué)國(guó)家重點(diǎn)實(shí)驗(yàn)室;新疆農(nóng)業(yè)大學(xué);
【基金】:國(guó)家現(xiàn)代農(nóng)業(yè)產(chǎn)業(yè)技術(shù)體系棉花產(chǎn)業(yè)技術(shù)體系項(xiàng)目(CARS-18-17) 棉花高產(chǎn)液態(tài)肥技術(shù)的引進(jìn)與成果應(yīng)用(2016ZX08010005) 農(nóng)業(yè)部行業(yè)專(zhuān)項(xiàng)(201503121)
【分類(lèi)號(hào)】:S562
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