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作物学报 ›› 2008, Vol. 34 ›› Issue (12): 2176-2183.doi: 10.3724/SP.J.1006.2008.02176

• 耕作栽培·生理生化 • 上一篇    下一篇

穗肥施量对水稻植株形态、群体生态及穗叶温度的影响

闫川;丁艳锋;王强盛;李刚华;刘正辉;缪小建;郑永美;魏广彬;王绍华*   

  1. 南京农业大学农业部作物生长调控重点开放实验室 / 江苏省信息农业高技术研究重点实验室，江苏南京210095
  • 收稿日期:2008-03-06 修回日期:2008-05-03 出版日期:2008-12-12 网络出版日期:2008-10-10
  • 通讯作者: 王绍华
  • 作者简介:闫川(1981-),男,安徽宿州人,博士研究生,主要从事作物生理生态研究
  • 基金资助:

    国家粮食丰产科技工程项目(2006BAD02A03);国家自然科学基金项目(30471016)

Effect of Panicle Fertilizer Application Rate on Morphological, Ecological Characteristics, and Organ Temperature of Rice

YAN Chuan,DING Yan-Feng,WANG Qiang-Sheng,LI Gang-Hua,LIU Zheng-Hui,MIAO Xiao-Jian,ZHENG Yong-Mei,WEI Guang-Bin,WANG Shao-Hua*   

  1. Key Laboratory of Crop Growth Regulation, Ministry of Agriculture / High-Tech Key Laboratory of Information Agriculture of Jiangsu Province, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China
  • Received:2008-03-06 Revised:2008-05-03 Published:2008-12-12 Published online:2008-10-10
  • Contact: WANG Shao-Hua

PDF

1879

被引次数

69

摘要：

以2个籼、粳稻品种为材料，设置高、中、低3个穗肥处理，以空白为对照，构建不同的群体结构，研究穗肥施量对植株形态和群体生态及穗叶温度的影响。结果表明，穗肥施量对穗长、穗弯曲度、叶长和叶角有明显影响；不同穗肥处理群体内部温度、湿度、光照强度和CO2浓度等微气象因子具有一定差异，中肥处理具有良好的群体微气象环境；此外，中肥处理群体具有适宜的LAI、净光合速率和蒸腾速率，冠层温度较低；施肥水平显著影响植株器官的温度，穗叶的温度随穗肥施量的增加而降低，中肥与高肥处理植株穗叶的温度差异不显著，但与低肥和空白处理差异显著。研究结果说明通过优化田间管理如合理的施肥来构建良好的群体，对降低植株穗叶和冠层温度以提高水稻抗热害能力效果显著。

关键词: 水稻, 穗肥, 形态, 群体生态, 穗叶温度

Abstract:

Using 2 japonica and indica rice cultivars with three panicle fertilizer application rate treatments and a control, different populations of rice were constructed, and the effect of panicle fertilizer application rate (PFAR) on morphological, ecological characteristics and organ temperature of rice were studied. The results showed that PFAR had a significant effect on length of panicle, panicle camber, length of leaf and leaf angle. It was also observed that air temperature, humidity, light intensity and content of CO2 were also affected by different PFAR treatments, medium PFAR was proved to be best for microclimate within rice population. Besides, there were felicitous leaf area index, length of second leaf, photosynthetic rate, transpiration and lower canopy temperature at medium PFAR. The temperature of plant organs was significantly affected by PFAR, the more the PFAR, the lower the temperature of panicle and leaf. The organ temperature was significantly different at the 0.05 level between medium PFAR and lower PFAR, control treatments, while not significantly between medium PFAR and higher PFAR. This study clearly showed that appropriate agronomic practices, such as PFAR, have a significant effect on the temperature of plant organs and canopy, and also enhance the resistance to heat stress.

Key words: Rice, Panicle fertilizer, Morphological, Microclimate, Temperature of panicle and leaf

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