Response of Photosynthate Production Characteristics of Rice to Water Consumption Process in Black Soil Region

被引：0
|
作者：
Wei Y. [1 ,2 ]
Ru C. [1 ,2 ]
Wu Y. [3 ,4 ]
Liu H. [2 ,5 ]
Yang J. [1 ,2 ]
Hou J. [1 ,2 ]
机构：
[1] School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin
[2] Key Laboratory of High Efficiency Use of Agricultural Water Resources, Ministry of Agriculture and Rural Affairs, Northeast Agricultural University, Harbin
[3] Heilongjiang Agricultural Reclamation Survey and Research Institute, Harbin
[4] College of Forestry, Northeast Forestry University, Harbin
[5] College of Science, Northeast Agricultural University, Harbin
来源：
Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery | 2019年 / 50卷 / 01期
关键词：
Black soil region; Multiple regression analysis; Photosynthate material production; Photosynthetic characteristics; Rice; Water consumption;
D O I：
10.6041/j.issn.1000-1298.2019.01.029
中图分类号：
学科分类号：
摘要：
In order to explore the response of photosynthate production characteristics of rice to water consumption process in black soil region, the experiment was carried out by lysimeter at the rice irrigation experiment station of Heilongjiang Province in 2017. The U7(76) experiment was conducted to analyze the effects of water consumption at each stage on photosynthate production characteristics of rice. The results showed that the effect of water consumption at early tillering stage and milky stage(ET1 and ET6)on tiller rate was not significant. Water consumption from the mid-tillering to heading-flowering(ET2~ET5)had a significant effect on tiller rate, influence order from large to small was ET4, ET5, ET3 and ET2. There was significantly positive correlation between water consumption at the late tillering stage and leaf area index. Leaf photosynthetic potential was most sensitive to ET4 response. There was significantly positive correlation between ET3 and effective leaf area rate, ET4 was significantly and positively correlated with effective leaf area ratio and high efficient leaf area ratio; ET5 was significantly and positively correlated with the maximum dry matter accumulation and population growth rate. ET1, ET3 and ET6 had no significant effect on the output rate of stem-sheath matter. ET2, ET4 and ET5 had significant effects on the output rate of stem-sheath matter(P<0.05), effect order from large to small was ET5, ET2 and ET4. For the conversion rate of stem-sheath matter, the effect of ET1 and ET4 on the conversion rate of stem-sheath matter was not significant, the effect of water consumption at other stages on the conversion rate of stem-sheath matter was significant (P<0.05). Impact order from large to small was ET5, ET6, ET3 and ET2, and the impact of ET3 on the conversion rate of stem-sheath matter was negative. There were linear relationship between stomatal conductance, transpiration rate, chlorophyll content and net photosynthetic rate in the leaves, the relationship between intercellular CO2 concentration and net photosynthetic rate was quadratic function curve. The response of leaf chlorophyll content and net photosynthetic rate to ET4 and ET5 was remarkably significant(P<0.01). There was a significant negative effect of ET3 on net photosynthetic rate. © 2019, Chinese Society of Agricultural Machinery. All right reserved.
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页码：263 / 274and284
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