<FONT face="Verdana">Effects of Temperature Increase of Soil on Productive Tiller Percentage  and Yield of Rice in High Altitude Ecological Area</FONT>

LI Jing-hong, LI Gang-hua，YANG Cong-dang,WANG Shao-hua,LIU Zheng-hui,WANG Qiang-sheng,DING Yan-feng

doi:10.3969/j.issn.1001-7216.2010.01.07

2010 , Vol. 24 >Issue 1: 36 - 42

DOI: https://doi.org/10.3969/j.issn.1001-7216.2010.01.07

研究报告

Effects of Temperature Increase of Soil on Productive Tiller Percentage and Yield of Rice in High Altitude Ecological Area

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1Key Laboratory of Crop Growth Regulation, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China； 2 Food Crop Research Institute, Yunnan Academy of Agricultural Sciences, Kunming 650205, China； *Corresponding author, E-mail：dingyf@njau.edu.cn

Received date: 1900-01-01

Revised date: 1900-01-01

Online published: 2010-01-10

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Abstract

To study the effect of increased soil temperature on rice production, three treatments(ridge cultivation, warmwater irrigation by sunning water pool and conventional cultivation) were arranged in a field experiment. The soil daily average temperature difference under ridge cultivation and warmwater irrigation by sunning water pool was 2.94℃ and 0.57℃ higher than that under conventional cultivation in the period from rice transplanting to critical stage for productive tiller in highaltitude and cold area. The quantity and quality of rice tiller before critical stage for productive tiller as well as the influence of soil warming measures to rice tillering and yield components were studied in high altitude area. The results showed that compared to the conventional cultivation, the productive tiller percentage increased by 14.59 and 0.14 percent points under the ridge cultivation and warmwater irrigation, respectively for Lijing 10, and by 12.08 and 2.09 percent points for Dabaigu, respectively . The yield increased by 13.79% and 10.82% under the ridge cultivation and warmwater irrigation, respectively for Lijing 10, and by 1335% and 11.54% for Dabaigu, respectively . The soil warming measures was helpful in promoting rice growth, accelerating tillering, increasing the accumulation of dry matter, optimizing the population quality and increasing productive tiller percentage and yield.

Key words： rice; productive till percentage; high altitude; soil temperature; yield

Cite this article

LI Jing-hong, LI Gang-hua，YANG Cong-dang,WANG Shao-hua,LIU Zheng-hui,WANG Qiang-sheng,DING Yan-feng . Effects of Temperature Increase of Soil on Productive Tiller Percentage and Yield of Rice in High Altitude Ecological Area[J]. Chinese Journal OF Rice Science, 2010 , 24(1) : 36 -42 . DOI: 10.3969/j.issn.1001-7216.2010.01.07

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