安徽省水稻施肥现状及技术需求
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作者单位:

(1.安徽省农业科学院土壤肥料研究所,养分循环与资源环境安徽省重点实验室,安徽 合肥 230031;2.安徽省土壤肥料总站,安徽 合肥 230001)

作者简介:

王家宝(1989-),男,安徽霍邱人,助理研究员,硕士,研究方向为新型肥料与高效施肥。E-mail:wangjiabao19900804@163.com。

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基金项目:

基金项目:国家重点研发计划项目(2016YFD0200806);安徽省农业科学院学科建设项目(2021YL086)。


Current situation and technical demand of rice fertilization in Anhui province
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Affiliation:

(1.Institute of Soil and Fertilizer,Anhui Academy of Agricultural Sciences,Key Laboratory of Nutrient Cycling,Resources and Environment of Anhui,Hefei Anhui 230031;2.Anhui Soil and Fertilizer Station,Hefei Anhui 230001)

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    摘要:

    水稻是安徽省总产量最高的粮食作物,为实现化肥零增长下的水稻高产,水稻施肥存在哪些问题以及需要哪些技术措施来解决是当前较为紧迫的任务。采用问卷调查的方式,对安徽省2016~2018年5176个农户的水稻施肥状况开展了调查。调查内容主要有肥料品种、养分含量、施用数量、施肥时期、施肥方法和水稻产量等。根据化肥的养分含量计算氮磷钾的投入量,以理论适宜施肥量对安徽省水稻施肥情况进行评价并针对施肥存在的问题提出相应的解决办法。结果表明,安徽省水稻单位面积氮磷钾肥用量3年平均分别为氮(N)183.5 kg·hm-2、磷(P2O5)69.7 kg·hm-2和钾(K2O)86.2 kg·hm-2,呈正态分布;氮肥和磷肥施用过量的比例分别为46.5%和29.4%,而钾肥施用量不足的比例高达49.1%,各水稻种植区之间差异明显。沿淮淮北平原水稻单位面积的氮、磷用量最高,分别为202.4和77.8 kg·hm-2,沿江圩区单位面积施钾量最高,为108.4 kg·hm-2;全省水稻氮磷钾投入比例为1∶0.38∶0.47,年际间变化不大。安徽省水稻肥源主要为尿素和复合肥,采用一基一追和一基二追施肥方式的样本超过总量的80%。总之,安徽省水稻施肥过量问题较为突出,有55%以上的农户处于高产低效或者低产低效的水平。生产中应注重落实有机肥替代化肥行动,根据区域特点集成基于养分供应(土壤+肥料)和水稻养分需求的机械化施肥技术,研制与土壤特性和水稻养分需求匹配的水稻专用配方肥和适合一次性施肥技术的肥料产品,以提高肥料利用效率和降低对环境的污染。

    Abstract:

    The total output of rice is the highest in grain crops in Anhui province. In order to achieve high yields of rice with zero growth of chemical fertilizers,what are the problems with rice fertilization and what technical measures should be put forward to solve are currently more urgent tasks. A questionnaire survey was conducted on the rice fertilization of 5176 rice farmers in Anhui province from 2016 to 2018. The survey included fertilizer varieties,nutrient content,application quantities,application period,application method,yield level,and so on. The nutrient inputs were calculated according to the nutrient contents and input amounts of fertilizer products. In this paper,the fertilization of rice in Anhui province was evaluated and the solutions to the existing problems were put forward. The results showed that the average nitrogen(N),phosphorus(P2O5)and potassium(K2O)fertilizer application in Anhui province was 183.5,69.7 and 86.2 kg·hm-2 in three years,and the fertilizer application among different farmers was normally distributed. There were quite a proportion of farmers whose fertilizer use exceeded the reasonable range. The proportion of excessive application of nitrogen and phosphorus fertilizer was 46.5% and 29.4%,respectively. The proportion of insufficient application of potassium fertilizer was high,reaching 49.1%. The differences among rice planting areas were obvious. The nitrogen and phosphorus application level of rice along the Huaibei area are the highest,which was 202.4 and 77.8 kg·hm-2,respectively. The highest amount of potassium application level was 108.4 kg·hm-2 in the polder area along the Yangtze River. The ratio of nitrogen,phosphorus and potassium input in rice was 1∶0.38∶0.47 in the whole province,which had little change between years. The nutrient application in rice in Anhui province mainly came from urea and compound fertilizer. More than 80% of the rice samples in the whole province were fertilized with the methods of "one base,one top dressing" and "one base,two top dressing". The problem of excessive fertilization of rice in Anhui province is more prominent. More than 55% of the farmers are at the level of high yield and low efficiency or low yield and low efficiency. In production,attention should be paid to the action of replacing chemical fertilizers with organic fertilizers,integrating mechanized fertilization technology based on nutrient supply (soil + fertilizer) and rice nutrient requirements according to regional characteristics,and developing special formula fertilizers that match soil characteristics and rice nutrient requirements and one-time suitable formula fertilizer products to improve fertilizer utilization efficiency and reduce environmental pollution.

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王家宝,程燚,胡荣根,余忠,袁嫚嫚,邬刚,耿维,孙义祥.安徽省水稻施肥现状及技术需求[J].中国土壤与肥料,2021,(4):162-171.

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  • 收稿日期:2020-05-06
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  • 录用日期:2020-06-15
  • 在线发布日期: 2021-09-15
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