| 冯克云.不同灌水量和施钾水平对棉花产量及其构成因素的影响[J].干旱地区农业研究,2009,27(6):44~49 |
| 不同灌水量和施钾水平对棉花产量及其构成因素的影响 |
| Effect of different irrigation and potassium on cotton yield and its component factors |
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| DOI：10.7606/j.issn.1000-7601.2009.06.09 |
| 中文关键词: 棉花 灌水量 钾肥 产量因素 产量 |
| 英文关键词:cotton irrigation potassium component factor yield |
| 基金项目:农业部“棉花抗枯萎病品种引进、选育及丰产栽培技术研究(EJ94-1) |
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| 中文摘要: |
| 试验在甘肃敦煌棉田设3个灌水量和5个钾肥施用水平,研究水分和钾肥对棉花产量及产量构成因素的影响,以明确西北内陆特早熟敦煌棉区棉花钾肥与水分的合理指标。结果表明:灌水和钾肥均会影响棉花的单株结铃数、单铃重和衣分,最终影响棉花的产量。其中灌水量主要影响棉花的单株结铃数,随着灌水量的增加,棉花的单株结铃数相应增多,但棉花的生育期相对延长,因而降低棉花的霜前花率。钾肥对棉花的单铃重、衣分和产量影响很大,试验各处理施用钾肥后,与对照(不施钾肥)比,棉花的单铃重、衣分和产量差异达到极显著水平。同时,要使钾肥发挥最好的肥效,必须严格控制灌水量,在土壤速效钾含量为140 mg/kg的沙壤土条件下,灌水总量控制在3000 m3/hm2,K2O施用量为105.0 kg/hm2时,可以使棉花的产量达到最高。 |
| 英文摘要: |
| In order to determine the impact of irrigation and potassium to yield and its factors for cotton,3 treatments of irrigation and 5 treatments of potassium levels were used.The test variety is Longmian No.1.The result showed that irrigation and potassium fertilization will affect the boll number of cotton,boll weight and lint percentage,and the yield of cotton as the ultimate result. Irrigation mainly affects boll number of cotton.With the increase in irrigation,cotton plants increase correspondingly in the number of bolls,but relatively extended period of fertility,thereby reducing the cotton flower before frost rate.Potassium fertilization mainly affects boll weight and lint percentage of cotton plant.Of all the treatments,the application of potash fertilizer and no potash fertilizer,the yield difference reached a very significant level.However,to play the best potash fertilizer efficiency,we must strictly control irrigation.In the conditions of K content in the soil was 140 mg/kg and normal application of N,P fertilizer,to irrigate water 3 000 m3/hm2,fertilize K2O 105.0 kg/hm2,can make the highest yield of cotton. |
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