Actionable Policy Options for Scaling-Up System of Rice Intensification for Ensuring Higher Productivity, Energy Efficiency and Sustainable Rice Production

Nirmala Bandumula
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Abstract

Globally, India stands first in rice area and second in rice production. To feed the growing population, rice production has to be increased amid strong competition for limited resources including land. Also, concerns have been raised about yield gaps in rice. The system of rice intensification is one of the strategies to narrow the yield gaps. Rice is the major crop in India, therefore, the identification of an energy-efficient rice cultivation system is important to food security and sustainable intensification (SI). Hence, a comparison was made between conventional and the system of rice intensification (SRI) methods of rice cultivation by conducting two experiments. One field experiment was conducted from 2013 to 2017 at 25 locations across India under the All India Coordinated Rice Improvement Project and another experiment was conducted in 2017 using surveys by collecting data from 262 randomly selected SRI farmers using a personal interview method in the Telangana state of India. The 5-year experimental data revealed that the SRI method of cultivation produced higher rice grain yield (up to 55%) compared to the conventional transplanting method. Survey data revealed that total costs of rice production reduced by 22.71% under SRI. Break even output under SRI was reduced by 58.1%. Adoption of SRI saved total energy inputs by 4350 MJ/ ha. The energy productivities were 0.16 kg/MJ and 0.21 kg/MJ for conventional and SRI methods, respectively. Therefore, for ensuring higher productivity, net returns, energy efficiency and sustainable rice production it is recommended to adopt an environmentally friendly SRI method of crop establishment in the Telangana region of India. Based on the constraints as perceived by the farmers, policy options for scaling up of SRI are suggested.
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扩大水稻集约化系统以确保更高生产力、能源效率和可持续水稻生产的可操作政策选择
在全球范围内,印度水稻面积第一,水稻产量第二。为了养活不断增长的人口,水稻产量必须在对土地等有限资源的激烈竞争中增加。此外,人们还对水稻的产量缺口表示担忧。水稻集约化制度是缩小产量差距的策略之一。水稻是印度的主要作物,因此,确定一种节能的水稻种植系统对粮食安全和可持续集约化(SI)具有重要意义。因此,通过两项试验,对水稻常规栽培方法和水稻集约化栽培方法进行了比较。2013年至2017年,在全印度协调水稻改良项目下,在印度25个地点进行了一项田间试验,2017年进行了另一项试验,通过调查收集了印度特伦甘纳邦262名随机选择的SRI农民的数据,采用了个人访谈法。5年的实验数据表明,与传统的移栽方法相比,SRI种植方法的稻米产量更高(最高可达55%)。调查数据显示,水稻生产总成本在SRI下降低了22.71%。SRI下的盈亏平衡产出减少了58.1%。SRI的采用节省了4350兆焦耳/公顷的总能源投入。常规方法和SRI方法的能量生产力分别为0.16 kg/MJ和0.21 kg/MJ。因此,为了确保更高的生产力、净回报、能源效率和可持续的水稻生产,建议在印度特伦加纳地区采用一种环境友好的SRI方法来种植作物。根据农民感知到的制约因素,提出了扩大SRI的政策选择。
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