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以“金城5号”西瓜嫁接苗为试材,采用单因素对比试验设计方法,研究了自然条件下压砂年限对旱区压砂瓜生理特性及产量的影响,以期为干旱盐碱地地区压砂瓜可持续开发提供参考依据。结果表明:在全生育期内,除土壤有机质变化规律为凸双峰模式,其余养分变化相似,呈凸单峰模式,其高峰期和低峰期有所不同;压砂地的土壤养分(速效磷、速效钾、碱解氮和有机质)含量均随着压砂年限的增加而降低,而土壤全盐含量则相反;在全生育期,压砂瓜主蔓长、叶片数、叶面积和叶面积指数均呈上升趋势且随着压砂年限的延长而逐渐减小;在试验条件下,随着压砂年限的延长产量随之降低。
Using “Jincheng No.5” watermelon grafted seedlings as experimental materials, the single factor comparative test design method was used to study the effect of sand age on the physiological characteristics and yield of sand moss in the dry land. Sambac sustainable development provides a reference. The results showed that during the whole growth period, except the soil organic matter variation pattern of convex-bimodal pattern, the rest of nutrients had similar changes and had a convex single peak pattern with different peak and low peak periods. The soil nutrients (available phosphorus , Available potassium, alkaline hydrolysis nitrogen and organic matter) decreased with the increase of sand pressure, but the content of total salt in soil was opposite. During the whole growth period, the main stem length, leaf number, leaf area and leaf area The indexes all showed an upward trend and gradually decreased with the increase of sand pressure. Under the experimental conditions, the yield decreased with the increase of sand age.