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2023年4月19日发(作者：北京作文网)A review of fertilizer, lime and organic manure use
on farm crops in Great Britain fro周处知错文言文翻译 m 1983 to 1987
期刊名称：杜甫的爱国诗有哪些 Soil Use and Management
作者： A.G. Chalmers
年份： 2010年
期号：第4期
关键词： Nitrogen fertilizers;phosphate;potash;sulfur;liming;manures;review
摘要：In 1983, an annual Survey of Fertil俊组词 iser Practice in England and Wales was
extended to Scotland, to provide comprehensive information on inorganic fertilizer,
lime and also organic m万人空巷 anure use in mainland Britain. It was based on an annual
sample of about 1500 farms, selected from the Agricultural Cens小山重叠金明灭的意思 us and stratified
by farm type and size. Results from the first fifteen years (1983–97) show that
fertilizer nitrogen (N) rates on both tillage crops and grassland peaked at 157 and
132 kg ha –1杜牧的诗300首 , respectively, in the mid 1980s and subsequently decreased by c .10%.
The majority of N was applied in straight form (without P or K) to tillage crops and
in compound form (containing two or more NPK; N桂树丛生兮山之幽 K) to grassland.
Total N use on cereals showed little ch三军过后尽开颜全诗 ange but autumn-appli村晚古诗背诵 ed N decreased on
both winter cereals
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