Acta Agriculturae Zhejiangensis ›› 2024, Vol. 36 ›› Issue (7): 1492-1501.DOI: 10.3969/j.issn.1004-1524.20230554

• Crop Science • Previous Articles     Next Articles

Analysis of yield and utilization of temperature and light resources of different types of ratoon rice varieties in central Anhui, China

PAN Zhijun1(), WU Xiaowen1, WU Chenyang1, CHENG Yu1, CHEN Long1, ZHANG Xiaohong1, ZHANG Jinshan1, ZHOU Bing1, JIANG Bo1, ZHANG Wenjing2, CHE Zhao2, SONG He2   

  1. 1. Agricultural Technique Extension Center of Lujiang County, Lujiang 231500, Anhui, China
    2. School of Agronomy, Anhui Agricultural University, Hefei 230031, China
  • Received:2023-04-26 Online:2024-07-25 Published:2024-08-05

Abstract:

To explore the growth and development characteristics and utilization of temperature and light resources among different types of ratoon rice varieties in central Anhui, China, and provide references for the selection of suitable ratoon rice varieties and annual rice cultivation patterns, 8 representative ratoon rice varieties from 4 types (early indica rice, early indica hybrid rice, middle-season indica hybrid rice, indica-japonica hybrid rice) were selected as the test materials. The rice yield and meteorological factors were measured during the whole growth period. The results showed that the middle-season indica hybrid rice had the highest yield [(12.47±0.24)t·hm-2], solar radiation production efficiency [(0.40±0.01)g·MJ-1] and effective accumulated temperature (≥10 ℃) production efficiency [(4.35±0.10)kg·hm-2·℃-1·d-1]. It realized high yield by maitaining the high daily yield and prolonged growth period. Early indica rice and early indica hybrid rice matured 24-47 days earlier than the midle-season indica hybrid rice and indica-japonica hybrid rice, which provided more abundant temperature and light resources for the successive crop planting. In summary, when the middle-season indica hybrid rice was used as ratoon rice, it could improve the utilization efficiency of temperature and light resources and crop yield. However, the rotation patterns could be more abundant when the early indica rice and early indica hybrid rice were used as ratoon rice.

Key words: ratoon rice, variety, yield, utilization of temperature and light resources, rotation model

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