| 引用本文: | 赵鹏,孙书洪,薛铸.盐分胁迫对水稻生长性状试验影响研究[J].灌溉排水学报,,():-. |
| zhaopeng,sunshuhong,xuezhu.盐分胁迫对水稻生长性状试验影响研究[J].灌溉排水学报,,():-. |
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| 摘要: |
| 本文以水稻为研究对象，品种选取津稻919，研究其全生育期盐分胁迫下的生长性状。灌溉水矿化度选取为CK、2g/L~7g/L共7组处理，水稻测量指标选取株高、叶面积、分蘖数、蘖穗数以及SPAD值。针对全生育期不同矿化度灌溉条件下水稻的生长性状，分析水稻各阶段发育耐盐情况。结果表明：不同矿化度微咸水灌溉对水稻生长性状均有不同程度的影响，总体上呈现出株高、叶面积、分蘖数、蘖穗数、随盐分浓度的增加而降低。其中在全生育期盐分胁迫条件下，5g/L-7g/L微咸水对水稻生长性状影响显著。株高与叶面积均呈现不同程度的减少，其中7g/L微咸水对水稻影响最为显著。2g/L-3g/L微咸水对水稻株高与叶面积无明显抑制作用。不同矿化度微咸水灌溉下，1g/L-2g/L低浓度微咸水使土壤渗透势提高，进一步促进了水稻根系对水分的吸收，株高与叶面积涨势与CK处理组无明显差异（p>0.05）。当灌溉水盐分浓度高于4g/L时，全生育期株高与叶面积变化曲线产生明显的降低。该试验测量指标丰富，选取对照组范围广，可以优化水稻微咸水灌溉制度，为水稻微咸水灌溉提供理论指导。 |
| 关键词: 水稻；盐分胁迫； 耐盐性分析；生长性状；SPAD值 |
| DOI： |
| 分类号:S2 |
| 基金项目:天津市科委科技支撑重点项目（14ZCZDNC00001） |
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| Study on the effects of salt stress on rice growth characters |
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zhaopeng, sunshuhong, xuezhu
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Tianjin Agricultural University
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| Abstract: |
| In this paper, rice 919 was selected as the research object to study its growth characteristics under salt stress during the whole growth period. 7 groups of CK, 2g/L~7g/L were selected for the salinity of irrigation water. Plant height, leaf area, tiller number, tiller number and SPAD value were selected for the measurement indexes of rice. According to the growth characteristics of rice under different salinity irrigation conditions during the whole growth period, the salt-tolerance of rice at each stage was analyzed. The results showed that the brackish irrigation with different salinity had different effects on the growth characters of rice, and the plant height, leaf area, tiller number, tiller number and panicle number decreased with the increase of salt concentration. Among them, 5g/ L-7g /L brackish water had a significant effect on rice growth under salt stress in the whole growth period. Plant height and leaf area decreased to different degrees, among which 7g/L brackish water had the most significant effect on rice. 2g/L-3g/L brackish water had no obvious inhibition on rice plant height and leaf area. Under the irrigation of brackish water with different salinity, the low concentration brackish water of 1g/ L-2g /L increased the soil osmosis potential and further promoted the water absorption of the rice root system. There was no significant difference in plant height and leaf area growth between the CK treatment group and the CK treatment group (p>0.05). When the salinity concentration of irrigation water was higher than 4g/L, the change curve of plant height and leaf area decreased significantly during the whole growth period. The experiment has rich measurement indexes and a wide range of control group, which can optimize the brackish water irrigation system of rice and provide theoretical guidance for brackish water irrigation of rice. |
| Key words: rice; Salt stress; Salt tolerance analysis; Growth character; SPAD values |
