北部地區農田土壤肥力概況

The General Situation of Farm-Soil Fertility in North Area

王斐能(Fei-Neng Wang)

《桃園區農業改良場研究彙報》 59期 (2006/06) Pp. 47-56

https://doi.org/10.29567/ZHWHGX.200606.0005

摘要

To solve the farmer's soil fertility problems of crop cultivation, TYDAIS provides farmland soil fertility analysis service for free and commends reasonable fertilizer application method to improve the qualities of crops. In the years from 2002 to 2004, soil analysis service of TYDAIS had 4,388 soil samples, among which Taoyuan county occupied 40%, Xinzhu county 35%, Taipei county 20%, Xinzhu city 3.3%, Taipei city 1.2%, Jilong city 0.1%. The average soil reaction out of 4,388 samples was 5.5 ± 1.0 and soil electrical conductivity was 0.38 ± 0.59 dS m^(-1), soil organic matter was 33 ± 17 g kg^(-1), soil available phosphorous was 73 ± 60 mg kg^(-1), soil exchangeable potassium was 161 ± 173 mg kg^(-1), soil exchangeable calcium was 1,390 ± 1,360 mg kg^(-1), soil exchangeable magnesium was 151 ± 149 mg kg^(-1). In Bei-pu of Xinzhu county, there were 87% soil samples their soil reaction below 5.5 and the average soil reaction was only 4.5. In Taoyuan county an important place of greenhouse vegetable production, the soil electrical conductivity was too higher in Taoyuan 1.19 dS m^(-1), Lu-zhu 0.93 dS m^(-1), Ba-de 0.81 dS m^(-1) and there are 34% soil electrical conductivity was higher then 0.6 dS m^(-1). Soil organic matter below 20 g kg^(-1) was in order of Xinzhu county (45%) ＞ Taipei county (24%) ＞ Taoyuan county (7%), among which Bei-pu and E-mei of Xinzhu county have 73% soil insufficient organic matter. Soil available phosphorous excess (＞50 mg kg^(-1)) was in order of Taoyuan county (58%) ＞ Xinzhu county (50%) ＞ Taipei county (43%), Soil exchangeable potassium excess (＞ 100 mg kg^(-1)) was in sequence of Taoyuan county (69%) ＞ Xinzhu county (58%) ＞ Taipei county (49%), Soil exchangeable calcium deficient (＜ 570 mg kg^(-1)) was in order of Taipei county (20%) ＞ Xinzhu county (14%) ＞ Taoyuan county (3%), Soil exchangeable magnesium deficient (＜ 50 mg kg^(-1)) was in order of Taipei county (10%) ＞ Xinzhu county (9%) ＞ Taoyuan county (2%). There is a finding that soils which cultivate fruit or bamboo were easy to occur soil acidity, calcium deficient and magnesium deficient while soils which cultivate vegetables in greenhouse were easy to occur salts accumulation.

關鍵字

土壤分析 ； 土壤肥力 ； 土壤診斷

並列摘要

To solve the farmer's soil fertility problems of crop cultivation, TYDAIS provides farmland soil fertility analysis service for free and commends reasonable fertilizer application method to improve the qualities of crops. In the years from 2002 to 2004, soil analysis service of TYDAIS had 4,388 soil samples, among which Taoyuan county occupied 40%, Xinzhu county 35%, Taipei county 20%, Xinzhu city 3.3%, Taipei city 1.2%, Jilong city 0.1%. The average soil reaction out of 4,388 samples was 5.5 ± 1.0 and soil electrical conductivity was 0.38 ± 0.59 dS m^(-1), soil organic matter was 33 ± 17 g kg^(-1), soil available phosphorous was 73 ± 60 mg kg^(-1), soil exchangeable potassium was 161 ± 173 mg kg^(-1), soil exchangeable calcium was 1,390 ± 1,360 mg kg^(-1), soil exchangeable magnesium was 151 ± 149 mg kg^(-1). In Bei-pu of Xinzhu county, there were 87% soil samples their soil reaction below 5.5 and the average soil reaction was only 4.5. In Taoyuan county an important place of greenhouse vegetable production, the soil electrical conductivity was too higher in Taoyuan 1.19 dS m^(-1), Lu-zhu 0.93 dS m^(-1), Ba-de 0.81 dS m^(-1) and there are 34% soil electrical conductivity was higher then 0.6 dS m^(-1). Soil organic matter below 20 g kg^(-1) was in order of Xinzhu county (45%) ＞ Taipei county (24%) ＞ Taoyuan county (7%), among which Bei-pu and E-mei of Xinzhu county have 73% soil insufficient organic matter. Soil available phosphorous excess (＞50 mg kg^(-1)) was in order of Taoyuan county (58%) ＞ Xinzhu county (50%) ＞ Taipei county (43%), Soil exchangeable potassium excess (＞ 100 mg kg^(-1)) was in sequence of Taoyuan county (69%) ＞ Xinzhu county (58%) ＞ Taipei county (49%), Soil exchangeable calcium deficient (＜ 570 mg kg^(-1)) was in order of Taipei county (20%) ＞ Xinzhu county (14%) ＞ Taoyuan county (3%), Soil exchangeable magnesium deficient (＜ 50 mg kg^(-1)) was in order of Taipei county (10%) ＞ Xinzhu county (9%) ＞ Taoyuan county (2%). There is a finding that soils which cultivate fruit or bamboo were easy to occur soil acidity, calcium deficient and magnesium deficient while soils which cultivate vegetables in greenhouse were easy to occur salts accumulation.

並列關鍵字

soil analysis ； soil fertility ； soil diagnosis