Journal of Zhejiang Agricultural Sciences ›› 2026, Vol. 67 ›› Issue (4): 1012-1017.DOI: 10.16178/j.issn.0528-9017.20240846

Previous Articles     Next Articles

Effect of different straw returning treatments on crop yield and soil quality in rice⁃wheat rotation system

JIANG Zhenghang1(), YING Shanshan1, ZHU Yuezhong2, XU Jiezhang2, HUANG Zhangting1   

  1. 1.College of Environment and Resources,Zhejiang A&F University,Hangzhou 311300,Zhejiang
    2.Farmland Quality Service Center in Yongkang City,Jinhua 321300,Zhejiang
  • Received:2024-11-03 Online:2026-04-11 Published:2026-04-17

Abstract:

In order to clarify the ecological effects of straw returning to the soil and provide certain data support for optimizing straw returning technology,this experiment set up three treatments in the production area of rice-wheat rotation in Yongkang City,Zhejiang Province:no rice and wheat straw returning to the field,no rice straw returning to the field-full wheat straw returning to the field,and full rice and wheat straw returning to the field. The effects of different straw returning treatments on crop yield,soil fertility,and diseases,pests,and weeds damage were studied. Compared with the treatment of no rice and wheat straw returning to the field,the treatment of full rice and wheat straw returning to the field significantly(p<0.05)increased soil organic matter content,soil total nitrogen content and available phosphorus content by 16.61%,10.96% and 95.22%,respectively,which indicated that returning crop straw to the field effectively improved soil fertility,but it also exacerbated the occurrence of diseases,pests,and weeds damage. Compared with the treatment of full rice and wheat straw returning to the field,the treatment of no rice straw returning to the field-full wheat straw returning to the field had a smaller impact on crop yield and relatively fewer occurrences of diseases,pests,and weeds damage. Compared with the treatment of no rice and wheat straw returning to the field,the treatment of no rice straw returning to the field-full wheat straw returning to the field increased the soil total nitrogen content and promoted the formation of soil aggregates. In actual production,reducing the direct return of rice straw to the field,combined with certain field management measures,can promote the rational utilization of straw,optimize the return structure,and ensure crop yield while increasing soil organic matter content and improving soil structure.

Key words: straw returning, crop yield, soil fertility, diseases,pests and weeds damage, rice-wheat rotation

CLC Number: