现行

LY/T 1269-1999

森林植物与森林枯枝落叶层全氮的测定
Determination of total nitrogen in forest plant and forest floor

1999-07-15

现行

LY/T 1229-1999

森林土壤水解性氮的测定
Determination of hydrolyzable nitrogen in forest soil

1999-07-15

现行

LY/T 1228-2015

森林土壤氮的测定
Nitrogen determination methods of forest soils

2015-10-19

现行

LY/T 1231-1999

森林土壤铵态氮的测定
Determination of ammonium nitrogen in forest soil

1999-07-15

现行

LY/T 1255-1999

森林土壤全硫的测定
Determination of total sulphur in forest soil

1999-07-15

现行

LY/T 1234-1999

森林土壤全钾的测定
Determination of total potassium in forest soil

1999-07-15

现行

LY/T 1232-1999

森林土壤全磷的测定
Determination of total phosphorus in forest soil

1999-07-15

现行

LY/T 1254-1999

森林土壤全钾、全钠的测定
Determination of total potassium and total sodium in forest soil

1999-07-15

现行

LY/T 1241-1999

森林土壤水解性总酸度的测定
Determination of hydrolytic total acidity in forest soil

1999-07-15

现行

LY/T 1244-1999

森林土壤交换性盐基总量的测定
Determination of total exchangeable base in forest soil

1999-07-15

现行

LY/T 1271-1999

森林植物与森林枯枝落叶层氮、磷、钾、钠、钙、镁的测定
Determination of total nitrogen,phosphorus,potassium,sodium,calcium,magnesium in forest plant and forest floor

1999-07-15

现行

ISO 20620-2021

Fertilizers and soil conditioners — Determination of total nitrogen by combustion
肥料和土壤改良剂.燃烧法测定总氮

2021-09-30

现行

BS ISO 20620-2021

Fertilizers and soil conditioners. Determination of total nitrogen by combustion
肥料和土壤调理剂 燃烧法测定总氮

2021-10-29

现行

LY/T 1237-1999

森林土壤有机质的测定及碳氮比的计算
Determination of organic matter in forest soil and calculation of carbon-nitrogen ratio

1999-07-15

现行

KS I ISO 11261(2018 Confirm)

토양의 질－총질소 함량 측정방법 (수정된 켈달법)
土壤质量总氮的测定改良凯氏定氮法

2008-11-10

现行

KS I ISO 11261(2021 Confirm)

토양의 질－총질소 함량 측정방법 (수정된 켈달법)
土壤质量总氮的测定改良凯氏定氮法

2008-11-10

现行

ISO 11261-1995

Soil quality — Determination of total nitrogen — Modified Kjeldahl method
土壤质量——总氮&mdash的测定；改良凯氏定氮法

1995-03-09

现行

UNE 77318-2001

Soil quality. Determination of total nitrogen. Modified Kjeldahl method.
土壤质量 总氮的测定 改良凯氏定氮法

2001-09-30

现行

KS I ISO 14255(2019 Confirm)

토양의 질－공기 건조 토양에서 염화칼슘용액으로 추출한 질산성 질소, 암모니아성 질소 및 총 가용성 질소 측정 방법
土壤质量用氯化钙溶液作萃取剂测定风干土壤中硝态氮、铵态氮和总可溶性氮

2009-12-18

现行

KS I ISO 14255(2023 Confirm)

토양의 질－공기 건조 토양에서 염화칼슘용액으로 추출한 질산성 질소, 암모니아성 질소 및 총 가용성 질소 측정 방법
土壤质量.用氯化钙溶液作萃取剂测定空气干燥土壤中的硝酸盐氮、铵态氮和总可溶性氮

2009-12-18