[1]张蛟,翟彩娇,崔士友.微咸水灌溉滩涂稻田盐分动态及其水稻产量表现[J].江苏农业学报,2018,(04):799-803.[doi:doi:10.3969/j.issn.1000-4440.2018.04.012]
　ZHANG Jiao,ZHAI Cai-jiao,CUI Shi-you.Dynamics of salt content of tidal paddy fields irrigated by brackish water and performance of rice yield[J].,2018,(04):799-803.[doi:doi:10.3969/j.issn.1000-4440.2018.04.012]
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微咸水灌溉滩涂稻田盐分动态及其水稻产量表现()
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江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2018年04期
页码:
799-803
栏目:
耕作栽培·资源环境
出版日期:
2018-08-25

文章信息/Info

Title:
Dynamics of salt content of tidal paddy fields irrigated by brackish water and performance of rice yield
作者:
张蛟; 翟彩娇; 崔士友
（江苏沿江地区农业科学研究所/南通市耐盐植物公共技术服务平台，江苏南通226541）
Author(s):
ZHANG Jiao; ZHAI Cai-jiao; CUI Shi-you
(Institute of Agricultural Sciences of Jiangsu Changjiang River Bank District/Nantong Public Technology Service Platform of Salt-tolerant Plants, Nantong 226541, China)
关键词:
微咸水; 滩涂; 水稻; 盐分动态
Keywords:
brackish water; tidal flat; rice; salinity dynamics
分类号:
S156.4+5
DOI:
doi:10.3969/j.issn.1000-4440.2018.04.012
文献标志码:
A
摘要:
选用洗盐后连续种植4年、洗盐后第1年种植水稻的滩涂地块为研究对象，以邻近滩涂荒地为对照，开展全生育期稻田土壤耕层（0～20 cm）、浅层水、以及灌溉水源中盐分的动态观测，并进行不同种植年限（1年和4年）的水稻产量比较。结果表明，种植1年、4年的稻田耕层土壤盐分的变化趋势基本一致，最高点均出现在抽穗期，耕层含盐量分别为1.83 g/kg和1.38 g/kg，全生育期平均值分别为1.07 g/kg和1.01 g/kg；浅水层盐分含量表现为前期（分蘖期）较低，中后期（拔节孕穗期后）较高，这与水稻生长期间雨水分布、灌溉水含盐量有密切关系。连续种植4年的水稻较种植1年的增产46.3%，主要原因在于生物量、收获指数和单位面积穗数的显著增加。水稻收获后1 m深土层土壤盐分测定结果表明，滩涂种稻利用微咸水灌溉不存在盐渍化加重的风险。
Abstract:
Two paddy fields with continuous rice planting for four year, and rice planting for the first year via leaching by fresh water or brackish water, and adjacent beach wasteland as control, were used to monitor the salinity dynamics of topsoil（0-20 cm）, shallow water, irrigation water in paddy soil during whole growth period, and compare yield of rice with different planting years (one-year and four-year). The results indicated that salinity dynamics of topsoil for one-year and four-year rice planting were similar, the highest point appeared at heading stage, and soil salt content were 1.83 g/kg and 1.38 g/kg for one-year and four-year rice planting, respectively. Averaged salt content through whole growth period were 1.07 g/kg and 1.01 g/kg for one-year and four-year rice planting, respectively. The salt content in shallow water layer was lower in the early stage (tillering stage) and higher in the middle and later stage (after jointing stage), which was closely related to the distribution of rainfall and the salinity of irrigation water. Compared with one-year planting paddy field, rice yield in the paddy field with four-year continuously rice planting increased 46.3% due to significant increase in biomass, harvest index and panicle number per unit area. The results of soil salinity determination in soil depth of one meter after rice harvesting showed that irrigation with brackish water had no risk of further salinization.

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备注/Memo

备注/Memo:
收稿日期：2017-04-26 基金项目：江苏省重点研发计划（现代农业）项目（BE2015337）；南通市应用研究计划项目（MS12016047） 作者简介：张蛟（1987-），男，陕西渭南人，硕士，助理研究员，研究方向为沿海滩涂土壤改良与开发利。(Tel)051387583485;(E-mail)zhangjiao0609@126.com。翟彩娇为共同第一作者。 通讯作者：崔士友，(Tel)051387583485；(E-mail)cuisy198@163.com
更新日期/Last Update: 2018-09-04