Crop residue retention (RR) is a recommended practice in China and globally. However, comprehensive assessment of changes and mechanisms affecting crop production and soil processes with RR and thus identifying systems of sustainable residues management are not widely studied. A national meta‐analysis was conducted to assess changes in 24 indicators (related to soil quality, soil nutrients, crop yield, and environmental impacts) along with their relationships under RR through 4,910 comparisons from 278 publications across China's croplands. Positively, RR significantly increased crop yield (7.8%), soil organic carbon (SOC) pool (12.3% to 36.8%), soil nutrient reserves (1.9% to 15.2%), soil temperature (6.7%), and water contents (5.9%) and improved soil structure when compared with residue removal (P < .05). Negatively, RR may increase soil acidification and significantly increase emissions of greenhouse gases (by 31.7%, 130.9%, and 12.2% for CO2, CH4, and N2O). Nonetheless, the negative effects can be alleviated, and the positive effects can be strengthened by adopting RR in conjunction with appropriate crops, specific farming practices, and avoiding more than 10 years of consecutive use. The results indicated that a higher decomposition of native and newly added organic matters, induced by RR and attendant changes in soil physical properties, could enhance the dynamics of SOC, microbial biomass, soil nutrients, and the final increase in crop yield and greenhouse gases emissions. Thus, the sustainability of RR‐based system could be enhanced by a careful choice and adoption of integrated farming practices. Proper RR management strategies could offer a climate‐smart solution to ensure food security and sustain soil productivity.

Strategic tillage (ST) has been proposed to maintain the benefits and alleviate the negative effects of long‐term no‐till (NT) management. In this study, the effects of ST on soil properties and yield loss were evaluated for a double‐cropped rice (Oryza sativa L.) paddy from 2006 to 2017 in Southern China. Three tillage systems were investigated: long‐term NT, continuous rotary tillage (RT), and ST. The results showed that ST effectively solved the problem of long‐term NT management: low and unstable bulk density in the soil surface layer. Compared with NT, ST significantly increased the available P (AP) concentration, available K (AK) concentration, the AP storage by 16.55% and the AK storage by 21.37% in the upper 20 cm soil. Moreover, the soil pH for NT and ST was lower than RT. ST increased the acidification risk in the 0–5 cm soil layer (pH was 4.84 in 2017) but significantly reduced the risk of yield loss compared to continuous NT. The average yield gap between ST and NT ranged from 408.21 kg ha−1 (during 2006–2009) to 1,144.85 kg ha−1 (during 2014–2017). ST reduced soil organic carbon (SOC) and total nitrogen (TN) concentration compared to NT in the 0–5 cm soil layer. However, it did not affect SOC and TN storage, although light fraction organic carbon (LOC) storage for ST was 36.59% lower than that for NT. ST is a promising option for promoting and maintaining the sustainability of rice production in Southern China.