| 罗小东,王全九,谭帅.基于土壤钠离子含量的不同施用量石膏改良剂的改良效果[J].干旱地区农业研究,2016,34(1):288~292 |
| 基于土壤钠离子含量的不同施用量石膏改良剂的改良效果 |
| The effect of gypsum improver based on Na+ concentration in soil |
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| DOI：10.7606/j.issn.1000-7601.2016.01.44 |
| 中文关键词: 盐碱地 石膏改良剂 水盐运移 土壤容重 经济效益 |
| 英文关键词:saline-alkali soil gypsum ameliorant water and salt transfer soil bulk density economic |
| 基金项目:水利部公益性行业科研专项经费项目（201301102）；新疆维吾尔自治区科技计划项目（201330103-3） |
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| 中文摘要: |
| 以土壤中钠离子含量为依据，分析石膏施量对土壤水盐分布和作物生长的影响，从而确定石膏改良剂合理施量。结果表明：石膏施量为土壤钠离子含量的200%时，土壤的容重下降14.44%，较其他处理下降幅度大; 石膏施量为土壤钠离子含量的200%和300%时，土壤的含水量较其他处理增加幅度大，分别为5.94%和6.21%； 石膏施量为土壤钠离子含量的200%和300%时，更有利于土壤的脱盐，相对脱盐率分别为14.1%和13.6%； 各施量都增加了棉花的茎粗、产量，施量为土壤钠离子含量的200%时，棉花的茎粗和产量增加最多，分别为1.6 mm和45 kg·667m-2； 当石膏施量为100%、200%和300%时，经济效益增加，相比对照分别增加108、263、148 元·667m-2，当石膏施量为350%时，经济效益降低，相比对照降低了44 元·667m-2。 |
| 英文摘要: |
| Influence of gypsum on soil salt distribution and crop production was analyzed in this research based on sodium ion content in soil, allowing a reasonable application of gypsum. Our results showed that when the application of gypsum was 200% of the sodium ion content in soil, soil bulk density could be lowered by about 14.44%. In addition, when the application of gypsum was 200% and 300% of the sodium ion content in soil, water content could be increased by about 5.94% and 6.21%, respectively. Moreover, when the application of gypsum was 200% and 300% of the sodium ion content in soil, conductivity of soil desalination was enhanced, resulting in desalination rates at 14.1% and 13.6%. Furthermore, each treatment increased stem diameter and yield of cotton. Among all treatments, 200% of the sodium ion content in soil was the best. Also, when the applications of gypsum were 100%, 200% and 300% of the sodium ion content in soil, the economic benefits for farmers could be increased by 108, 263 yuan·667m-2 and 148 yuan·667m-2. However, when the application of gypsum was 350% of the sodium ion content in soil, the economic benefit for farmers was rather reduced by 44 yuan·667m-2. |
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