Ragi作物集约化系统以实现持续生产力以应对气候变化的挑战

Narayanan Al, Rajeshwari S, Sukanya Ts
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摘要

作物集约化制度是提高生产力和长期维持农民收入的重要理念之一。尽管农民在田间面临各种限制,但收入翻倍是帮助他们维持生计的热门话题。气候变化是未来几年农业部门面临的另一个挑战。为评价ragi (SRgI)的建立技术,于2016 - 2019年进行了现场试验,试验采用因子随机区组设计,重复3次。处理包括三种建立技术,即间距:S1 (22.5 X 22.5 cm), S2 (25 X 25 cm)和S3 (30 X 30 cm),苗数:N1(每山一株)和N2(每山两株),苗龄:A1(12天苗),A2(15天苗)和A3(18天苗)和对照(22.5 X 10 cm,每山两株,18天苗)。结果表明,较宽间距(30 × 30cm)下12日龄单苗是应对水稻增产挑战的适宜栽培技术。发现SRgI技术可以实现一次采收,避免多次采收。以往SRgI的研究成果被认为是缓解气候变化策略(高温少雨)的工具。试验采用因子随机区组设计(2019- 2021),重复3次。处理包括播种日期两个因素:S1(6月1日周播种)、S2(6月2日周播种)、S3(6月3日周播种)和S4(6月4日周播种);品种:V1(TRY1), V2 (CO14), V3 (co15)。采用SRgI法种植,即单苗宽间距种植。根据相关数据,可以推断,在6月的第1周和第2周分别播种品种TRY 1和CO 15可以增加ragi的产量,最大限度地降低害虫发生的风险,降低生产成本,从而支持作为抗性作物缓解近期气候变化的概念,同时考虑到作物集约化系统及其效益。
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System of Crop Intensification in Ragi for Sustained Productivity to Meet the Challenges in Climate Change
System of crop intensification is one of the important concept to improve the productivity and to sustain the income of the farmers in long run. The doubling of farmers’ income is the talk of the day to help them in their livelihood in spite of various constraints face in the field. Climate change is another challenge in the years to come for the farming sectors. Field experiments were conducted from 2016 to 2019 to evaluate the establishment technique in ragi (SRgI) wherein the experiment was laid out in Factorial Randomized Block Design, replicated thrice. The treatment consists of three establishment techniques viz., Spacing: S1 (22.5 X 22.5 cm), S2 (25 X 25 cm) and S3 (30 X 30 cm), Number of seedling: N1 (one seedling per hill) and N2 (two seedlings per hill) and Age of seedling: A1 (12 days old seedling), A2 (15 days old seedling) and A3 (18 days old seedling) and control (22.5 X 10 cm, two seedlings per hill and 18 days old seedlings). The results revealed that single seedling with 12 days’ age under wider spacing (30 X 30cm) was the suitable establishment technique to meet the challenges of increased production in millets. It was found that SRgI technique could result in single stroke harvest of ragi, avoiding multiple harvests. The results from the previous research of SRgI was considered, as a tool for mitigating climate change strategies viz., high temperature and low rainfall. The experiments were taken up (2019-21) under Factorial Randomized Block Design, replicated thrice. The treatments consist of two factors viz., Date of sowing: S1 (Sowing on June 1st week), S2 (Sowing on June 2nd week), S3 (Sowing on June 3rd week) and S4 (Sowing on June 4th week); and Variety: V1(TRY1), V2 (CO14), and V3 (CO 15). SRgI method of planting was adopted i.e., single seedling with wider spacing. From the reference of the pertaining data, it can be deduced that early sowing of variety TRY 1 and CO 15 on 1st and 2nd week of June respectively could increase the production of ragi, minimize the risk of pest incidence and reduce the cost of production thereby support as a resistant crop to mitigate the climate change concepts projected in near future keeping in view of the System of Crop Intensification and its benefits.
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