Effects of Rice Yield and Quality Across Accumulated Temperature Zone Planting in Cold Area

• Published in: The journal of Northeast Agricultural University Vol. 22; no. 2; pp. 1 - 7
• Main Authors: Qiu-ju, Wang, Feng, Liu, Pan, Gao, Zhong-chao, Gao, Ben-chao, Chang, Yan-xia, Liu, Li-li, Zhang
• Format: Journal Article
• Language: English
• Published: Elsevier (Singapore) Pte Ltd 01.06.2015; Soil Fertilizer and Environment Resources Institute, Heilongjiang Academy of Agriculture Sciences, Harbin 150086, China%Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China%College of Agriculture, Northeast Agricultural University, Harbin 150030, China
• Subjects: accumulated temperature; cold area; rice; yield; rice; accumulated temperature; cold area; yield
• ISSN: 1006-8104
• DOI: 10.1016/S1006-8104(15)30025-8

Five rice varieties were planted to determine the variation of the yield and quality traits in five different regions in a cold area of China. The results showed that the number of the panicles, the number of grains per panicle and percentage of head-milled rice displayed quadratic curves against the accumulated temperature, and the sterile rate decreased with greater accumulated temperature. However, 1 000-grain weight had no correlation with the accumulated temperature and protein content, amylose content and taste also had no obvious relation with the accumulated temperature. The results from the accumulated temperature differed with rice variety, so the temperature insensitive type variety should be proposed for production.