A global analysis of alternative tillage and crop establishment practices for economically and environmentally efficient rice production.
A global analysis of alternative tillage and crop establishment practices for economically and environmentally efficient rice production.
复制标题
对经济和环境有效的水稻生产的替代性耕作和作物建立实践的全球分析。
DOI：
10.1038/s41598-017-09742-9
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发表时间：
2017-08-24
影响因子：
4.6
通讯作者：
Raman A
中科院分区：
文献类型：
--
作者：
Chakraborty D;Ladha JK;Rana DS;Jat ML;Gathala MK;Yadav S;Rao AN;Ramesha MS;Raman A
替代耕作和水稻种植方案应以更少的水和劳动力为目标，以产生与传统的水坑移栽水稻种植相似或更高的产量。这些做法在产量、水投入和经济方面的相对表现因水稻种植区而异。利用323个站点研究和9个农场研究（共3878个配对数据）的数据集，进行了全球元混合模型分析，以评估五种主要耕作/作物建立方案的产量、水投入、温室气体排放、成本和净收益。从移栽到直接播种是有利的，但从常规耕作到零耕作或减少耕作会降低产量。湿法直播稻产量优势为1.3 ~ 4.7% (p < 0.05)，净经济效益高达13% (p < 0.05)，节水15% (p < 0.05)，成本降低2.4 ~ 8.8%。免耕直接播种是另一种潜在的替代方案，可以节省大量的水投入和种植成本，而且没有产量损失。替代做法减少了甲烷的排放，但增加了一氧化二氮的排放。土壤质地在相对产量优势中起着关键作用，因此需要改进实践以适应特定的农业生态系统。
Alternative tillage and rice establishment options should aim at less water and labor to produce similar or improved yields compared with traditional puddled-transplanted rice cultivation. The relative performance of these practices in terms of yield, water input, and economics varies across rice-growing regions. A global meta and mixed model analysis was performed, using a dataset involving 323 on-station and 9 on-farm studies (a total of 3878 paired data), to evaluate the yield, water input, greenhouse gas emissions, and cost and net return with five major tillage/crop establishment options. Shifting from transplanting to direct-seeding was advantageous but the change from conventional to zero or reduced tillage reduced yields. Direct-seeded rice under wet tillage was the best alternative with yield advantages of 1.3–4.7% (p < 0.05) and higher net economic return of 13% (p < 0.05), accompanied by savings of water by 15% (p < 0.05) and a reduction in cost by 2.4–8.8%. Direct-seeding under zero tillage was another potential alternative with high savings in water input and cost of cultivation, with no yield penalty. The alternative practices reduced methane emissions but increased nitrous oxide emissions. Soil texture plays a key role in relative yield advantages, and therefore refinement of the practice to suit a specific agro-ecosystem is needed.
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影响因子：
5.1
作者：
Khush, GS
通讯作者：
Khush, GS
影响因子：
4.8
作者：
Adams, DC;Gurevitch, J;Rosenberg, MS
通讯作者：
Rosenberg, MS
影响因子：
2.4
作者：
Adviento-Borbe, Maria Arlene;Pittelkow, Cameron M.;Linquist, Bruce A.
通讯作者：
Linquist, Bruce A.
影响因子：
6.5
作者：
Ahmad, Shahrear;Li, Chengfang;Cao, Cougui
通讯作者：
Cao, Cougui
影响因子：
2.9
作者：
Gathala, Mahesh K.;Ladha, J. K.;Sharma, Pradeep K.
通讯作者：
Sharma, Pradeep K.