Research on Safe Full Heading Dates and Optimum Sowing Dates of Japonica Rice in South of Henan Porvince

doi:10.3969/j.issn.1006-8082.2015.01.010

Abstract

Abstract: Based on daily average temperatures from August to September during 1951 to 2010 in Xinyang city, with the continuous three days daily average temperature not lower than 20 degrees as the indice of temperatures for the safe full heading dates of japonica rice in south of Henan Province, the 80% guarantee rate for the safe full heading dates of japonica rice in south of Henan Province was determined at September 6th. By using the method of interval sowing experiments, the changes of growth period, yield and yield structure of testing varieties were analyzed, the safe full heading dates and optimum sowing dates of the testing varieties were determined.

Key words: south of Henan Porvince, japonica rice, safe full heading dates, optimum sowing dates

摘要： 应用河南省信阳市1951-2010年8-9月日平均温度资料，以连续3 d日平均气温不低于20℃作为豫南粳稻安全齐期界定指标，确定了80%保证率下的豫南粳稻安全齐穗期为9月6日；利用分期播种试验方法，对参试品种的生育期、产量结构和产量变化进行了分析，确定了参试品种的最佳齐穗期和最佳播种期。

关键词: 豫南, 粳稻, 安全齐穗期, 最佳播种期

CLC Number:

S511.2+2

DUAN Bin, SONG Shi-Zhi, HE Shi-Jie, LI Hui-Long, SONG Xiao-Hua, ZHEN Cai-Hong. Research on Safe Full Heading Dates and Optimum Sowing Dates of Japonica Rice in South of Henan Porvince[J]. , 2015, 21(1): 45-47,51.

段斌, 宋世枝, 何世界, 李慧龙, 宋晓华, 甄才红. 豫南粳稻安全齐穗期和最佳播种期研究[J]. 中国稻米, 2015, 21(1): 45-47,51.

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Research on Safe Full Heading Dates and Optimum Sowing Dates of Japonica Rice in South of Henan Porvince

豫南粳稻安全齐穗期和最佳播种期研究

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