Acta Agrestia Sinica ›› 2015, Vol. 23 ›› Issue (1): 107-113.DOI: 10.11733/j.issn.1007-0435.2015.01.017

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Effects of Cultivation Measures on the Cationic Content and Distribution of Forage in Saline Soil

ZHANG Wen-jie, DING Cheng-long, CHENG Yun-hui, XV Neng-xiang   

  1. Institute of Animal Science, Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu Province 210014, China
  • Received:2014-02-14 Revised:2014-05-14 Online:2015-02-15 Published:2015-01-31

盐土条件下不同栽培措施对4种禾本科饲草阳离子分布的影响

张文洁, 丁成龙, 程云辉, 许能祥   

  1. 江苏省农业科学院畜牧研究所, 江苏 南京 210014
  • 通讯作者: 丁成龙
  • 作者简介:张文洁(1986-),女,山东菏泽人,硕士,主要从事饲草调制与加工,E-mail:jiexiu1228@163.com
  • 基金资助:

    "十二五"国家科技支撑计划课题(2011BAD17B02)资助

Abstract:

The contents of Na+, K+, Ca2+, Mg2+ and the four cationic accumulations in different parts of plant were measured in order to explore a suitable culture technique for forages in saline soil. The results showed that the contents of Na+, K+, Ca2+ and Mg2+ of different parts of grasses in the same variety were significant difference from different cultivation measures (P<0.05). The contents of Na+ and Na+/Ca2+ in tested materials under covering straw and the addition of water retaining agent treatments were significantly lower than control, but the contents of K+, Ca2+, Mg2+, K+/Na+ and SK+/Na+ (stem/root) were higher than that of control. Among different varieties, the K+/Na+ ratios in the leaves and stems of Sorghum saccharatum and sudangrass were higher than that of silage maize and Zea Mexicana. In a word, the above-ground part of forage contained less Na+, higher K+ contents and higher K+/Na+ under the cultivation measures of straw mulching and addition of water retaining agent, but the degrees of improvement differed from different varieties.

Key words: Saline soil, Cultivation measures, Cationic

摘要:

为探讨盐土条件下牧草栽培技术,以4种禾本科牧草为材料,研究了3种不同栽培措施对饲草体内Na+, K+, Ca2+, Mg2+含量和分布的影响.结果表明:同一品种不同栽培措施处理下植株体内各离子含量差异显著(P < 0.05),覆秸秆与添加保水剂处理饲草各部分Na+含量及Na+/Ca2+显著低于对照;K+, Ca2+, Mg2+含量和K+/Na+显著高于对照.离子运输选择性系数SK+/Na+均以覆秸秆处理与添加保水剂处理显著高于对照(P < 0.05).相同栽培措施下甜高粱(Sorghum saccharatum)与高丹草(Sorghum bicolor×sorghum Sudanese)体内的K+/Na+在茎、叶中的分布显著高于青贮玉米(Zea mays)和墨西哥玉米(Euchlaena mexicana).在盐土条件下,覆秸秆和添加保水剂处理可使饲草地上部分的Na+含量降低,K+含量升高,维持饲草体内较高的K+/Na+和SK+/Na+值,提高饲草的耐盐性;不同饲草品种之间耐盐性差异较大.

关键词: 盐土, 栽培措施, 阳离子

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