Aquic soil and landscape (Boluo County, China)
An aquic soil is saturated with water and virtually free of gaseous oxygen for sufficient periods of time, such that there is evidence of poor aeration (gleying and mottling), common in wetlands.
Boluo County is a county of east-central Guangdong province, People's Republic of China. It is under the administration of the prefecture-level city of Huizhou, and in 2009, had a population of 813,700 residing in an area of 2,795 km (1,079 sq mi). It borders Yuancheng District, Dongyuan and Zijin counties to the northeast, Huiyang and Huicheng Districts to the southeast, Dongguan to the south, Zengcheng to the west, and Longmen County to the northwest.
Rice is the leading crop. Since less than one-fifth of the land is under cultivation, agriculture is of necessity extremely intensive; but the limited extent of sown land available is partly offset by repeated use of it. Progress in irrigation and flood control has made water control possible for almost all of the cultivated area, producing good rice yields. Farming and irrigation have become increasingly mechanized, with more reliance placed on the use of chemical fertilizers.
Two crops of rice a year can be grown on most cultivated land, and in the Pearl River Delta three crops are not unusual. Thus, although average yields per harvest are below the national average, annual yields exceed the average. Although food-grain crops occupy almost all of the total cultivated area, the industrial and fruit crops grown on the remaining land are of national importance. Guangdong annually produces much of China’s total output of sugarcane. In tropical Guangdong a number of industrial crops are successfully raised, including rubber, sisal, palm oil, hemp, coffee, and black pepper. Other traditional agricultural products include sweet potatoes, peanuts (groundnuts), and tea. No less than 300 types of fruits are grown, among the more representative of which are citrus, litchi, pineapples, and bananas.
For more information about describing and sampling soils, visit:
www.nrcs.usda.gov/resources/guides-and-instructions/field...
For additional information on "How to Use the Field Book for Describing and Sampling Soils" (video reference), visit:
www.youtube.com/watch?v=e_hQaXV7MpM
For additional information about soil classification using USDA-NRCS Soil Taxonomy, visit:
www.nrcs.usda.gov/resources/guides-and-instructions/keys-...
or;
www.nrcs.usda.gov/resources/guides-and-instructions/soil-...
For more information about Hydric Soils and their Field Indicators, visit:
www.nrcs.usda.gov/resources/guides-and-instructions/field...
Aquic soil and landscape (Boluo County, China)
An aquic soil is saturated with water and virtually free of gaseous oxygen for sufficient periods of time, such that there is evidence of poor aeration (gleying and mottling), common in wetlands.
Boluo County is a county of east-central Guangdong province, People's Republic of China. It is under the administration of the prefecture-level city of Huizhou, and in 2009, had a population of 813,700 residing in an area of 2,795 km (1,079 sq mi). It borders Yuancheng District, Dongyuan and Zijin counties to the northeast, Huiyang and Huicheng Districts to the southeast, Dongguan to the south, Zengcheng to the west, and Longmen County to the northwest.
Rice is the leading crop. Since less than one-fifth of the land is under cultivation, agriculture is of necessity extremely intensive; but the limited extent of sown land available is partly offset by repeated use of it. Progress in irrigation and flood control has made water control possible for almost all of the cultivated area, producing good rice yields. Farming and irrigation have become increasingly mechanized, with more reliance placed on the use of chemical fertilizers.
Two crops of rice a year can be grown on most cultivated land, and in the Pearl River Delta three crops are not unusual. Thus, although average yields per harvest are below the national average, annual yields exceed the average. Although food-grain crops occupy almost all of the total cultivated area, the industrial and fruit crops grown on the remaining land are of national importance. Guangdong annually produces much of China’s total output of sugarcane. In tropical Guangdong a number of industrial crops are successfully raised, including rubber, sisal, palm oil, hemp, coffee, and black pepper. Other traditional agricultural products include sweet potatoes, peanuts (groundnuts), and tea. No less than 300 types of fruits are grown, among the more representative of which are citrus, litchi, pineapples, and bananas.
For more information about describing and sampling soils, visit:
www.nrcs.usda.gov/resources/guides-and-instructions/field...
For additional information on "How to Use the Field Book for Describing and Sampling Soils" (video reference), visit:
www.youtube.com/watch?v=e_hQaXV7MpM
For additional information about soil classification using USDA-NRCS Soil Taxonomy, visit:
www.nrcs.usda.gov/resources/guides-and-instructions/keys-...
or;
www.nrcs.usda.gov/resources/guides-and-instructions/soil-...
For more information about Hydric Soils and their Field Indicators, visit:
www.nrcs.usda.gov/resources/guides-and-instructions/field...