Effects of Straw Returning and Tillage Methods on Photosynthetic Characteristics and Yield of Maize
Gao Pengju
Li Faqiao
Tang Guorong
Shi Dajin
Tan Xianjie
Cheng Weidong
Zhou Xunbo
Lyu Juzhi
Abstract：This experiment aimed to study the effects of straw returning and tillage methods on photosyn-thetic characteristics and yield of maize by split-plot design,and to provide reasonable tillage method for maize yield improvement.Under the precondition of straw returning and traditional cultivation pattern,four tillage treatments were set as rotary tillage after deep loosening(SS-RT),rotary tillage(RT),deep loosening(SS)and no-tillage(NT),and their effects on photosynthetic parameters,relative chlorophyll content,leaf area in-dex,dry matter accumulation and yield of spring and autumn maize in 2022 were compared.The results showed that compared with traditional cultivation,under straw returning,the leaf area index of SS-RT,RT,SS and NT treatments increased by 11.01%,6.48%,8.24%and 8.75%respectively,the relative chlorophyll content increased by 5.96%,5.14%,5.27%and 6.49%respectively,the net photosynthetic rate increased by 7.57%,9.04%,8.90%and 9.39%respectively,the spike dry mater weight increased by 9.03%,5.40%,6.73%and 8.78%respectively,the annual yield increased by 2.92%,4.73%,2.28%and 3.52%respective-ly.The mean of spring and autumn yields under SS-RT treatment with straw returning increased by 2.38%,12.26%and 17.01%compared with RT,SS and NT treatments,respectively.In summary,rotary tillage after deep loosening,rotary tillage,loosening and no-till under straw returning all improved the photosynthetic ca-pacity,dry matter accumulation and annual yield of maize,and the best treatment was straw returning com-bined with rotary tillage after deep loosening.
Keywords：MaizeStraw returningTillage methodPhotosynthetic characteristicsYield
Publication Date：2024-06-28
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：10( 30-39 )