| 新型改良剂对苏打碱土理化性质及水稻产量的影响 |
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| 引用本文： | 董伟,杜学军,王栋,汪顺义,冯浩杰,任雪芹,胡树文.新型改良剂对苏打碱土理化性质及水稻产量的影响[J].干旱地区农业研究,2018,36(1):61-65. |
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| 作者姓名： | 董伟 杜学军 王栋 汪顺义 冯浩杰 任雪芹 胡树文 |
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| 作者单位： | 中国农业大学资源与环境学院; |
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| 基金项目： | 农业部公益性行业科研专项(201303103-03)；国家重点研发计划(2016YFC0501200) |
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| 摘 要： | 为明确新型土壤改良剂对碱土快速改良的效果,筛选出田间应用最佳的改良剂用量,采用田间试验与土柱淋溶模拟相结合方法,设A_0(不加改良剂)、A_1(改良剂5 t·hm~(-2))、A_2(改良剂7.5 t·hm~(-2))、A_3(改良剂15t·hm~(-2))4个处理,研究不同用量改良剂对盐碱土pH值、水溶性盐总量、碱化度、土壤养分变化特性及水稻产量的影响。结果表明:与A_0处理相比,用新型改良剂处理均显著降低了0~40 cm土层pH值、水溶性盐总量和Na+含量(P0.05),且随改良剂用量增加,呈现降低趋势。田间试验中施用改良剂的土壤碱化度由34.55%(A0)下降至18.20%(A_3)(P0.05),同时降低了收获后土壤有机质和有效磷的含量(P0.05)。经改良后,水稻空瘪率显著降低(P0.05),水稻的有效分蘖增加,穗粒数和千粒重显著提高(P0.05),其中,A_2处理水稻增产近三倍(290.8%)。综合改良效果与产投比,改良剂适宜施用量为7.5 t·hm~(-2)。
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| 关 键 词： | 苏打型盐碱土 改良剂 水稻产量 土柱淋溶 |
Effects of a new type of soil amendment on physical and chemical properties of soda alkali-saline soil and yield of the rice |
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| DONG Wei,DU Xue-jun,WANG Dong,WANG Shun-yi,FENG Hao-jie,REN Xue-qin,HU Shu-wen.Effects of a new type of soil amendment on physical and chemical properties of soda alkali-saline soil and yield of the rice[J].Agricultural Research in the Arid Areas,2018,36(1):61-65. |
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| Authors: | DONG Wei DU Xue-jun WANG Dong WANG Shun-yi FENG Hao-jie REN Xue-qin HU Shu-wen |
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| Institution: | College of Resources and Environmental Science, China Agricultural University, Beijing 10093, China,College of Resources and Environmental Science, China Agricultural University, Beijing 10093, China,College of Resources and Environmental Science, China Agricultural University, Beijing 10093, China,College of Resources and Environmental Science, China Agricultural University, Beijing 10093, China,College of Resources and Environmental Science, China Agricultural University, Beijing 10093, China,College of Resources and Environmental Science, China Agricultural University, Beijing 10093, China and College of Resources and Environmental Science, China Agricultural University, Beijing 10093, China |
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| Abstract: | |
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| Keywords: | soda alkali-saline soil soil amendment rice yield soil column leaching |
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