浙江研发关键技术破解红黄壤“酸瘦”难题|久久发布国产伦子伦精品
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中新网金华10月10日电(记者 王逸飞)红黄壤是中国南方的主要土壤类型,承载着全国约1/3的耕地资源,但普遍存在“酸、瘦、粘”等障碍问题,严重制约着红黄壤区域农业生产能力的提升。如今,源自于浙江的红黄壤耕地“降酸培肥”与产能提升关键技术,为解决上述顽疾提供了系统解决方案。

9-10日,浙江省农科院环境资源与土壤肥料研究所承担的国家重点研发计划项目“浙江丘陵盆地中低产耕地健康土壤培育与绿色生产关键技术与模式”现场观摩会在浙江金华兰溪市香溪镇举行。会议期间,项目取得的相关技术示范成效得到各地专家的充分肯定。
项目实施地处浙江金衢盆地红黄壤区,项目实施前土壤易板结,酸化面积占比超过55%,有机质含量平均仅为9.5g/kg,耕地质量等级仅7.5等,整体产能亟待提高。
浙江省农科院环境资源与土壤肥料研究所副研究员王峰介绍,项目团队通过两年的系统攻关,依据土壤障碍空间分布特征,创新构建“调酸—固碳—培肥”协同改良技术体系,具体包括施用含腐植酸新型调理剂以中和酸性,采用改性腐植酸、有机肥、秸秆还田与绿肥种植等技术措施快速提升有机质,配套专用肥料与精准变量施肥技术补充作物所需养分;通过集成优质高产水稻品种与生态防控技术,形成绿色生产体系,有效破解新垦耕地“酸化贫瘠”难题。
“项目实施后,示范区土壤速效钾、有效磷含量显著提升,团粒结构改善,微生物多样性增强,碳氮循环功能得到优化,新垦耕地熟化周期明显缩短。全区耕地酸化状况显著改善,质量等级提升4个等级,水稻亩产突破750公斤,实现耕地质量与粮食产能协同跃升。”王峰说。
观摩会期间,中国科学院南京土壤研究所所长沈仁芳等专家充分肯定了项目实施成效,并围绕技术推广和政策配套等提出建议。专家认为,该项目的成功实践,为南方地区红黄壤耕地高效利用提供了可复制、可推广的系统解决方案。(完)
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