| 昼夜增温条件下水分亏缺对不同生态型小麦幼苗生长发育的影响 |
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| 引用本文： | 黄彩霞,王虎兵,赵德明,柴守玺,王玉才.昼夜增温条件下水分亏缺对不同生态型小麦幼苗生长发育的影响[J].节水灌溉,2017(4). |
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| 作者姓名： | 黄彩霞 王虎兵 赵德明 柴守玺 王玉才 |
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| 作者单位： | 1. 甘肃农业大学工学院,兰州,730070;2. 甘肃省工程咨询中心,兰州,730000;3. 甘肃农业大学农学院,兰州,730070 |
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| 基金项目： | 甘肃省自然基金，甘肃农业大学盛彤笙科技创新基金，甘肃农业大学工学院青年教师创新基金 |
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| 摘 要： | 以半冬性小麦品种西农2000和冬性品种兰天26号为材料,利用智能型程序型人工气候箱设置昼夜恒定温度梯度14℃(T1)、16℃(T2)、18℃(T3)和20℃(T4)4个,土壤含水量分别为饱和含水量的75%~80%(CK)、60%~65%(LW)和50%~55%(MW)3个梯度,研究温度和水分互作对不同生态型品种小麦幼苗生长发育的影响。结果表明,水分和温度对小麦幼苗生长发育均有显著影响(P0.05)。幼穗分化进程以T4CK处理缩短最明显,较最慢的T1CK处理平均缩短7d,温度对幼穗分化的影响效应高于水分;温度处理中,最高温度的T4(20℃)处理较T1(14℃)处理幼穗分化进程平均显著提前4.7 d,而适当水分胁迫尽管加快幼穗分化进程,但较充分灌溉CK无显著差异;在生长指标上,轻度水分胁迫LW有利于增加次生根数目、单株叶面积和干物质量,分别较充分供水CK平均增加22%、7%和14%,而次生根长和株高均表现降低,较CK平均降低7%、3%;随着昼夜温度升高,小麦株高、单株叶面积、次生根数目、次生根长度及单株干物质均相应增加,二者平均最大相差2.31、2.94 cm、2.0个、3.74 cm2、1.86 g,但水分、温度及品种互作对小麦株高、单株叶面积、次生根数目、次生根长及干物质均无显著影响。
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| 关 键 词： | 昼夜增温 水分胁迫 品种 幼苗 小麦 |
Effects of Water Deficit on Growth and Development of Wheat under Different Air Temperature Conditions |
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| HUANG Cai-xia,WANG Hu-bing,ZHAO De-ming,CHAI Shou-xi,WANG Yu-cai.Effects of Water Deficit on Growth and Development of Wheat under Different Air Temperature Conditions[J].Water Saving Irrigation,2017(4). |
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| Authors: | HUANG Cai-xia WANG Hu-bing ZHAO De-ming CHAI Shou-xi WANG Yu-cai |
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| Abstract: | Taking semi-winter wheat variety Xinong 2000 and winter varieties Lantian 26 as the test material, the effect of different temperature (14℃, 16℃, 18℃and 20℃) and soil moisture (75%~80%,60%~65% and 50%~65% of saturated water content) on the seedling growth and development of two ecotype wheat varieties are studied by using intelligent type artificial climate box.The results show that the soil moisture and temperature have significant effect on wheat seedling growth (P<0.05);the T4CK treatment has the fastest spike differentiation process, which is shortened for 7 days than that of T1CK treatment, which has the slowest spike differentiation process;when only taking temperature into consideration, with the temperature increases, the process of spike differentiation is faster, the T4 treatment is faster than T1 treatment by 4.7 days;the appropriate water stress accelerates the spike differentiation process, but there has no significant difference when comparing with the full irrigation of CK treatment;for the growth index, LW is beneficial to increase the numbers of secondary roots, leaf areas and dry matter, which are increased by an average of 22%, 7% and 14%, respectively, than that of CK, while the length of secondary roots and plant height are reduced by 7% and 3% on average when compared with CK;plant height, leaf area per plant, the number of secondary roots, the length of secondary roots and dry matter of wheat all increase with the rise of temperature of day and night, the maximum difference is 2.31, 2.94 cm, 2.0 person, 3.74 cm 2, 1.86 g, respectively, but the interaction among moisture, temperature, varieties has no significant effect on plant height, leaf area per plant, the number of secondary roots, the length of secondary roots and dry matter of wheat. |
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| Keywords: | daytime and nighttime warming water stress variety seedling wheat |
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