醋渣覆盖对海滨滩涂盐渍土麦田小麦拔节期生长的影响
2021-10-12余桂红朱孔志张鹏卢俊马鸿翔
余桂红 朱孔志 张鹏 卢俊 马鸿翔
摘要 为探明覆盖醋渣对海滨滩涂新开垦盐渍土麦田小麦生长的影响,在盐渍土麦田小麦播种以后撒施覆盖45 t/hm2醋渣,分析了覆盖醋渣处理对小麦拔节期叶片叶绿素相對含量、株高和地上部干重的影响。结果表明,与未覆盖醋渣的对照相比,覆盖醋渣处理的拔节期叶片叶绿素相对含量、株高和地上部干重等均显著提高。因此,播种后麦田覆盖醋渣可促进盐渍土麦田小麦拔节期的生长发育。
关键词 小麦;醋渣覆盖;盐渍土;拔节期
中图分类号 S 512.1 文献标识码 A 文章编号 0517-6611(2021)19-0029-02
doi:10.3969/j.issn.0517-6611.2021.19.007
开放科学(资源服务)标识码(OSID):
Effects of Vinegar Residue Mulching on Wheat Growth at Jointing Stage in Coastal Saline Soil
YU Gui-hong1, ZHU Kong-zhi2, ZHANG Peng1 et al
(1 .Institute of Food Crops, Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu 210014;2. Jiangsu Golden Agriculture Co., Ltd., Yancheng, Jiangsu 224100)
Abstract In order to find the effects of vinegar residue mulching on the growth of wheat in the newly reclaimed saline soil fields of coastal beach, vinegar residue (45 t/hm2) was used to cover wheat fields after wheat sowing. The effects of vinegar residue mulching on the relative content of chlorophyll (SPAD) of wheat leaves, plant height and aboveground dry weight at jointing stage were analyzed. Results showed that the relative content of chlorophyll (SPAD) of wheat leaves, plant height and aboveground dry weight mulched with vinegar residue were significantly higher than those of the control.Therefore, vinegar residue mulching in wheat field after sowing could promote the growth and development of wheat at jointing stage in saline soil.
Key words Wheat;Vinegar residue mulching;Saline soil;Jointing stage
基金项目 江苏省农业科技自主创新项目(CX(20)3146);江苏省现代农业重点研发项目(BE2017337)。
作者简介 余桂红(1971—),女,湖北随州人,研究员,博士,从事小麦遗传育种研究。
收稿日期 2021-02-04
土壤的盐渍化可严重影响农作物的生长,导致农作物减产。江苏省海岸线888.9 km,拥有丰富的滩涂资源,滩涂面积约占全国滩涂面积的1/4,为我国滩涂面积最大的省份[1]。近年来,随着海边滩涂的不断开发,越来越多的海边滩涂从荒芜状态,成为种植经济作物和小麦、水稻等大田作物的农田。滩涂变农田可极大提高我国农作物的供给,但滩涂开垦的农田大多存在盐渍化的问题,尤其是小麦等旱作物,盐渍化导致滩涂新开垦的麦田在早期大多为中低产田,迫切需要改良。
盐渍土改良的方法主要有工程技术改良、化学改良和农艺措施改良等方法[2]。农作物秸秆覆盖为农艺措施改良方法中的一种[3-5]。……
