Special Thesis & Basic Research

Effects of Different Straw Retuning Methods on Rice Yield and Quality in Rice and Wheat Rotation System

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  • Jiangsu Academy of Agricultral Sciences, Nanjing 210014, China

1st author: jjwu@jaas.ac.cn

*Corresponding author: gkjjaas@163.com

Received date: 2021-07-25

  Online published: 2021-09-20

Abstract

In order to explore the effects of different straw returning methods and models on rice yield and quality in Huaibei area, we took Youxianggeng as experimental material, compared and analyzed the yield and quality of Youxianggeng under different straw returning methods (rotary tillage, plowing) and models (no returning, double returning, rice returning and wheat returning) under normal water and fertilizer management. The two-year results showed that the yield was the lowest in the plowing and no returning treatment, and the yield increasement effect of straw returning was more significant under plowing condition. According to the analysis of yield composition, most indicators interacted significant and extremely significant level between straw returning methods and modes. At the same time, there were significant and extremely significant differences in panicle weight, panicle length, number of grains per panicle, primary branch and secondary branch among returning modes in 2020, showing a tendency that straw returning was better than non returning. The seed setting rate under plowing was significantly higher than that under rotary tillage. There were significant and extremely significant differences in chalky grain rate, alkali spreading value, content of amylose, transparency and RVA value among different treatments in 2020. The chalky grain rate under plowing was significantly better than that under rotary tillage. Under plowing conditions, the amylose content of rice returning treatment and wheat returning treatment was significantly higher than that of no returning treatment, indicating that straw returning increased the amylose content to a certain extent, so that the rice was not too soft and sticky. RVA data showed that the value was the best under the treatment of rotary tillage with no returning and ploughing with wheat returing. It shows that different returning patterns may affect the eating quality of rice.

Cite this article

Jingjing WU, Simei ZHANG, Dongxiang GU, Kejun GU . Effects of Different Straw Retuning Methods on Rice Yield and Quality in Rice and Wheat Rotation System[J]. China Rice, 2021 , 27(5) : 79 -83 . DOI: 10.3969/j.issn.1006-8082.2021.05.017

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