{
  "declared_links": {
    "economic_signal_ids": [
      "believability",
      "china-econ",
      "cny-fix-gap",
      "data-darkness",
      "stock-connect"
    ],
    "relation": "topic-surface-only",
    "scan_signal_ids": []
  },
  "dek": "10月13日，记者从中国石化新闻办获悉，以“央地赋能良田，科技守护粮安”为主题的营口万亩水稻膜肥机一体化项目成果发布会在辽宁营口举行。中国石化完全自主知识产权的PBST全生物降解地膜在项目中成功应用，与传统种植模式相比，实现节水30%以上、节肥20%以上、零除草剂，提高了肥料利用率，减少了稻田甲烷等温室气体排放，水稻亩均增产10%以上，农户亩均综合收益提升200元以上，实现了生态与效益双赢。",
  "desk": "rights",
  "event_id": "event-bc57d1cdb71f8a8a7bc3a7be",
  "evidence_groups": [
    {
      "group_id": "china-news-service-state-media",
      "roles": [
        "media"
      ],
      "source_ids": [
        "china-news-service-finance"
      ]
    }
  ],
  "evidence_refs": [
    {
      "independence_group": "china-news-service-state-media",
      "item_id": "item-2eeae813712be98c71d0116b",
      "published_at": "2026-10-13T10:20:07Z",
      "role": "media",
      "source_id": "china-news-service-finance",
      "source_name": "China News Service",
      "title": "中国石化PBST全生物降解地膜在营口稻田应用成功",
      "url": "https://www.chinanews.com.cn/cj/2026/10-13/10713923.shtml",
      "version_id": "itemv-c1b2b214e13695b518294179"
    }
  ],
  "evidence_strength": "single-source",
  "headline": "中国石化PBST全生物降解地膜在营口稻田应用成功",
  "lead": false,
  "lead_reason": "Current single-source metadata is retained but not promoted as a lead.",
  "limitations": [
    "Palimpsest retained only feed title, canonical link, time, and a bounded plain-text excerpt; it did not fetch the article body.",
    "The evidence-strength label describes source structure, not truth, intent, impact, or causation.",
    "Declared instrument links are topical pointers until a separate scan or economic observation is joined by time and method.",
    "Title-similarity clustering can miss differently worded or cross-language accounts and can join closely worded updates.",
    "This dossier currently contains one independent evidence group and remains explicitly attributed."
  ],
  "mutation": {
    "kind": "unchanged",
    "previous_version_id": "eventv-53a3cbb42711d5bee73c98c0"
  },
  "published_at": "2026-10-13T10:20:07Z",
  "reported_facts": [
    {
      "attribution": "China News Service",
      "evidence_item_id": "item-2eeae813712be98c71d0116b",
      "published_at": "2026-10-13T10:20:07Z",
      "statement": "China News Service published “中国石化PBST全生物降解地膜在营口稻田应用成功”."
    }
  ],
  "topics": [
    "economy",
    "rights",
    "technology"
  ],
  "updated_at": "2026-10-13T10:20:07Z",
  "url": "https://palimpsest.info/news/wire/event-bc57d1cdb71f8a8a7bc3a7be/",
  "version_id": "eventv-53a3cbb42711d5bee73c98c0"
}