TY - JOUR
T1 - Annual burying of straw after pelletizing
T2 - A novel and feasible way to improve soil fertility and productivity in Northeast China
AU - Wang, Xiquan
AU - Lv, Guoyi
AU - Zhang, Yan
AU - Yu, Yang
AU - Wang, Xinbo
AU - Peixoto, Leanne
AU - Qian, Chunrong
AU - Pang, Huancheng
N1 - Publisher Copyright:
© 2023 Elsevier B.V.
PY - 2023/6
Y1 - 2023/6
N2 - Increasing the amount of straw returning has the potential to improve soil fertility, but is not widely accepted due to yield reductions in regions with low temperatures and precipitation. Thus, annual straw burying with large amounts after pelletizing was established considering soil fertility, crop yield and economic income. A three-year field trial with a large amount (75 Mg ha−1 year−1) of pelletized straw (PS75) and chopped straw (CS75), normal amount (15 Mg ha−1 year−1) of chopped straw (CS15), and no straw returning (CK) was conducted for spring maize. PS75 increased the soil total carbon content by 8–17 % and 29–51 % as compared to the other treatments between 0–20 and 20–40 cm respectively. PS75 also had a higher total nitrogen content, moderate soil C/N ratio, lower bulk density, and comparable soil pH in the third year. Specifically, PS75 increased grain yield by 5–7 % relative to CK, and 6–21 % relative to CS15 in the second and third years. PS75 also increased grain yield by 5–28 % than CS75 in the three years with higher kernel number and 100-kernel weight. This was partly attributed to a longer grain filling period due to higher soil carbon and nitrogen contents for PS75 than others. Notably, PS75 exhibited increased trends in grain yield and economic income with experimental year compared to CK. Overall, annual pelletized straw burying with a large amount is a feasible pathway for improving the soil fertility and crop yield in Northeast China.
AB - Increasing the amount of straw returning has the potential to improve soil fertility, but is not widely accepted due to yield reductions in regions with low temperatures and precipitation. Thus, annual straw burying with large amounts after pelletizing was established considering soil fertility, crop yield and economic income. A three-year field trial with a large amount (75 Mg ha−1 year−1) of pelletized straw (PS75) and chopped straw (CS75), normal amount (15 Mg ha−1 year−1) of chopped straw (CS15), and no straw returning (CK) was conducted for spring maize. PS75 increased the soil total carbon content by 8–17 % and 29–51 % as compared to the other treatments between 0–20 and 20–40 cm respectively. PS75 also had a higher total nitrogen content, moderate soil C/N ratio, lower bulk density, and comparable soil pH in the third year. Specifically, PS75 increased grain yield by 5–7 % relative to CK, and 6–21 % relative to CS15 in the second and third years. PS75 also increased grain yield by 5–28 % than CS75 in the three years with higher kernel number and 100-kernel weight. This was partly attributed to a longer grain filling period due to higher soil carbon and nitrogen contents for PS75 than others. Notably, PS75 exhibited increased trends in grain yield and economic income with experimental year compared to CK. Overall, annual pelletized straw burying with a large amount is a feasible pathway for improving the soil fertility and crop yield in Northeast China.
KW - Crop yield
KW - Soil nutrients
KW - Straw form
KW - Straw returning
KW - Zea mays L.
UR - http://www.scopus.com/inward/record.url?scp=85150790681&partnerID=8YFLogxK
U2 - 10.1016/j.still.2023.105699
DO - 10.1016/j.still.2023.105699
M3 - Journal article
AN - SCOPUS:85150790681
SN - 0167-1987
VL - 230
JO - Soil and Tillage Research
JF - Soil and Tillage Research
M1 - 105699
ER -