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中国农学通报 ›› 2018, Vol. 34 ›› Issue (35): 79-85.doi: 10.11924/j.issn.1000-6850.casb18010002

所属专题: 园艺

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

不同种植年限设施西瓜土壤可溶性盐组分变化特征

杨艳菊,王娟娟,柯帅,单玉华,张海鹏,钱晓晴   

  1. 扬州大学环境科学与工程学院,扬州大学环境科学与工程学院,扬州大学环境科学与工程学院,扬州大学环境科学与工程学院,扬州大学农学院,扬州大学环境科学与工程学院
  • 收稿日期:2018-01-01 修回日期:2018-11-20 接受日期:2018-03-21 出版日期:2018-12-16 发布日期:2018-12-16
  • 通讯作者: 杨艳菊
  • 基金资助:
    :国家自然科学基金项目“水稻土硝化能力对低氧环境的适应机理及其与氮损失的关系”(41701329);中国博士后科学基金“低氧环境下水 稻土中的硝化作用研究”(2017M621837);江苏省产学研前瞻性联合研究项目“保护地硝酸盐积累的危害与生态消减机理与技术”(BY2015061-05);江 苏省农业三新工程项目“西甜瓜土壤改良与水肥一体化技术示范推广”(SXGC2017308);中国博士后特别资助“水稻根际土壤硝化能力对肥料氮去向 的调控作用”(2018T110562)。

Effect of Planting Ages on Soil Salts Content in Facility Cultivation Watermelon Soil

  • Received:2018-01-01 Revised:2018-11-20 Accepted:2018-03-21 Online:2018-12-16 Published:2018-12-16

摘要: 采用田间取样及室内分析相结合的方法,研究了连续种植不同年限(0年-6年)西瓜的设施土壤可溶性盐含量及组分的变化。结果表明,与种植0年的麦地土壤相比,设施西瓜土壤pH显著降低(P < 0.01);土壤碱解氮、速效磷和速效钾含量显著增加(P < 0.01);电导率显著增加且随着设施西瓜种植年限的延长而显著增加趋势(R2 = 0.90,P < 0.01)。设施西瓜土壤可溶性盐阳离子以Ca2+和Mg2+为主,阴离子以SO42-和NO3-为主。随着设施西瓜种植年限的增加设施西瓜土壤可溶性盐总量显著增加(R2 = 0.93, P < 0.01),增加的可溶性盐主要为Ca2+、K+、NO3-和Cl-,分配比例分别为31.3%、10.1%、23.6%和15.0%。相关分析表明,供试的设施西瓜土壤速效磷、速效钾与盐基离子Na+、K+、SO42- 和Mg2+含量显著相关(P<0.05),土壤电导率(EC)与土壤可溶性盐总量相关关系达到显著水平(P<0.05)。

关键词: 花生, 花生, 上胚轴, 毒莠定, 愈伤, 体细胞胚

Abstract: To analyze the effects of watermelon planting years on changes of soil salts contents in facility cultivation watermelon soil, a field sampling in combination with analytical methods was carried out to measure the content and composition of soluble salts in soils with different facility cultivation planting ages. The results showed that soil pH value of facility cultivation watermelon soil significantly decreased compared with upland soil (P <0.05), while soil available nitrogen (AN), available phosphate (AP), available potassium (AK), andEC significantly increased (P <0.05). SoilEC was significantly increased with the increase of planting ages (R 2= 0.90,P <0.01). Ca2+ and Mg2+ were the major soluble salt cation, and SO42- and NO3- were the major soluble salt negative ions in facility cultivation watermelon soil. The content of soil total soluble salt were significantly increased with the increase of planting ages (R 2=0.93,P <0.01). The Ca2+, K+, NO3- and Cl- accounted for about 31.3%, 10.1%, 23.6% and 15.0% of the increased total soluble salt in soil. Correlation analysis indicated that soil available phosphate (P), available potassium (K) were important factor affecting the content of Na+ 、K+ 、SO42- and Mg2+. Soil electrical conductivity (EC ) could represent the level of soil secondary salinization.