Balancing straw returning and chemical fertilizers in China: Role of straw nutrient resources

Yin, Huajun; Zhao, Wenqiang; Li, Ting; Cheng, Xiaoli; Liu, Qing

doi:10.1016/j.rser.2017.06.076

Cited by 289 publications

(146 citation statements)

References 20 publications

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“…Straw incorporation caused deterioration of the soil environment, which leads to late revival and the reduction of tiller during the early stage of rice growth [11,31], while nutrients released from straw decomposition promoted tiller growth in the late stage of rice growth [5,[32][33][34]. The reason for the negative impacts of straw incorporation on rice tiller is complex [35][36][37] and has been reported by many scientists [38][39][40][41][42].…”

Section: Impacts Of Straw Returning On Tiller Growth and Yield Of Hybmentioning

confidence: 99%

“…Mulching treatment is appropriate for hilly areas due to lesser usage of machinery, while plowing treatment is suitable for plain areas where the mechanization is relatively higher [3,4]. Previous research has explored that continuous straw incorporation in soil built a better growth environment for rice when considering long periods, by means of increasing the nitrogen, phosphorus, potassium [5][6][7], and organic matter content of the soil [8][9][10]. Most of the earlier studies reported that straw incorporation enhanced rice yield in rape-rice rotation fields when considering long periods.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Negative and Positive Impacts of Rape Straw Returning on the Roots Growth of Hybrid Rice in the Sichuan Basin Area

et al. 2019

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Incorporating oilseed-rape straw in soil is one of the effective methods for enhancing the use efficiency of agricultural resources in the rape-rice rotation system. However, the impacts of oilseed-rape straw incorporation on root growth and dynamic changes in soil are still unclear. In order to provide a deeper understanding of the oilseed rape straw return on rice growth and productivity, the experiment was conducted in the field and in a specially-designed pots system from 2016 to 2017 by means of two straw returning methods and four straw returning amounts. In the early stage of rice growth (0–36 days after rice transplanting) the straw returning treatments decreased 1.0–8.6 mg/plant in bleeding density and 0.10–6.11, 0.06–0.31, and 0.52–0.84 μmol/(g h) in the activity of glutamine synthetase (GS), glutamic-oxalacetic transaminase (GOT), and glutamic-pyruvic transaminase (GPT), respectively. Oilseed rape straw returned by mulching induced negative impacts on new germinating roots in 0–10 cm of soil, while the negative impacts were observed on roots in 10–30 cm of soil for straw returned by plowing. In the later stage of rice growth (56–75 days after rice transplanting), oilseed rape straw returning produced some positive impacts on rice roots, which enhanced the yield of rice. Conclusively, our findings suggested that dynamic root growth and the activity of root enzymes are two major factors behind the slow reviving of rice after transplanting in the straw returning field. Plowing is a more appropriate method of straw returning than mulching in the rape-rice rotation system in the Sichuan basin area, with a straw incorporation rate of 3.0 t/hm2.

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Section: Impacts Of Straw Returning On Tiller Growth and Yield Of Hybmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Negative and Positive Impacts of Rape Straw Returning on the Roots Growth of Hybrid Rice in the Sichuan Basin Area

et al. 2019

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“…The annual total amount of corn straw in China is huge, but the utilization rate is low [2]. In some instances, there is improper utilization, which causes a waste of resources and environmental pollution [3]. Therefore, it is better to return corn straw to the field to be applied as fertilizer since it can enhance soil fertility by increasing soil organic matter content (SOM), which is the major source of nutrients required for plant growth and the energy source for microbial activities [4].…”

Section: Introductionmentioning

confidence: 99%

Effects of Returning Granular Corn Straw on Soil Humus Composition and Humic Acid Structure Characteristics in Saline-Alkali Soil

Chen

Opoku-Kwanowaa

2020

Sustainability

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Returning straw plays an important role in protecting the environment and maintaining the sustainable development of agriculture. In this research, we explored the effects of returning granular corn straw on soil humus composition and humic acid structural characteristics in a typical saline-alkali soil. This study was conducted in Jilin province. A randomized block design consisting of nine plots with three treatments in three replicates was used for this study. The treatments were granular corn straw (GS), coarse corn straw (CS), and control (CK). The results show that treatments GS and CS both increased the contents of soil humus and its components in the soil compared to CK. However, treatment GS recorded the highest significant increase in soil humus carbon (HEC), fulvic acid carbon (FAC), and humic acid carbon (HAC) by 17.59%, 8.32%, and 26.51%, respectively. Comparing the two straw treatments, it was found that the relative intensities of treatment GS at 2920 and 2850 cm−1 were higher than treatment CS by 1.58% and 72.49%, respectively. The relative intensities of treatment GS at 1720 cm−1 and 1620 cm −1 were lower than treatment CS by 52.2% and 30.43%, respectively. Moreover, an analysis of soil humic acid (HA) through an infrared spectrum, fluorescence spectrum, and principal components analysis (PCA) showed that the application of straw makes the structure of HA aliphatic, simple, and younger, and also promotes the continuous renewal of humus. In this study, the application of granular corn straw effectively improved the soil humus content and humic acid structural characteristics and is thus highly recommended.

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“…Data about fertilizer, irrigation area, and total production were obtained from Compilation of National Cost of Agricultural Products [59] and China Rural Statistical Yearbook [47]. According to the data from the China Phosphate Fertilizer Industry Association, the 15-15-15 common type compound fertilizer (nitrogen, phosphorus, and potash in equal proportions) is the main variety and its market share is 54% [60,61]. Since the official statistical database did not cover the proportion of nitrogen, phosphorus, and potash in compound fertilizer, as such, in this paper we calculate the nitrogen, phosphorus, and potash in this way.…”

Section: Data Sourcementioning

confidence: 99%

Decomposition of Fertilizer Use Intensity and Its Environmental Risk in China’s Grain Production Process

et al. 2018

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Abstract:In order to fully explore the fertilizer use intensity and its potential threats to the ecological environment, this paper has studied the decomposition of fertilizer use intensity and its environmental risk in China's grain production. Based on the statistical data collected from 10 provinces during 2004-2015 in China's grain producing areas, this paper has analyzed the effect of fertilizer use intensity from a regional perspective. The environmental risk assessment model considers some factors such as the fertilizer application safety thresholds use efficiency, multiple cropping index, and environmental impact weight. The fertilizer application safety thresholds are calculated on the target output of local food crops. The results show that: (1) during 2004-2015, the fertilizer use intensity shows an increasing trend in China's grain producing areas, and the intensity is significantly higher than the upper limit of the international safety fertilization; (2) the cumulative contribution rate of the increase of fertilizer use intensity caused by regional fertilizer use efficiency and grain planting structure adjustment are 57.03% and 1.81% respectively; (3) in 2015, China's grain producing areas' environmental risk index of phosphorus and potash was low, with the values in these two provinces being quite different and indicating the characteristics of aggregation and distribution. Therefore, the Chinese government should unswervingly encourage the application of some technology that could save fertilizer and increase efficiency, establish environmental risk monitoring and control systems, and improve relevant policies and regulations.

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Balancing straw returning and chemical fertilizers in China: Role of straw nutrient resources

Cited by 289 publications

References 20 publications

Negative and Positive Impacts of Rape Straw Returning on the Roots Growth of Hybrid Rice in the Sichuan Basin Area

Negative and Positive Impacts of Rape Straw Returning on the Roots Growth of Hybrid Rice in the Sichuan Basin Area

Effects of Returning Granular Corn Straw on Soil Humus Composition and Humic Acid Structure Characteristics in Saline-Alkali Soil

Decomposition of Fertilizer Use Intensity and Its Environmental Risk in China’s Grain Production Process

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