Sign in or 
Share this
Wet Rice Cultivation
Wet Rice Cultivation
1) State three reasons why wet rice cultivation is widely practiced in Asia? [3]
China, India, Thailand, Vietnam, Cambodia are some countries in Asia that practice wet rice cultivation extensively. · This is because the climatic conditions in most parts of Asia are suitable for · growing padi. These countries have high total annual rainfall above 1500mm · and high temperature of above 240C, which are favourable to grow wet rice. · As rice is a staple food in Asia, it is thus widely grown to support the large · population. · The fertile alluvial soils in the rivers plains and deltas in these countries are · ideal for growing wet rice too.
2) Why is wet rice cultivation a commercial enterprise in Thailand? [4]
70% of its population is farmers. · It is a commercial enterprise because wet rice cultivation is a labour-intensive industry. It provides employment for the large population, which are mostly unskilled or semi-skilled. · As the world’s biggest exporter of rice, it is important to the country’s economy · as it brings in revenue for the country. · The country can use the revenue collected to alleviate poverty and hunger or to · develop the country’s infrastructure. · It also helps to develop the secondary industries such as processing the harvested · rice in the rice mills, transporting, sorting and distributing and exporting rice to the · rest of the world.
3) What negative impact does wet rice cultivation have on the environment?[3]
In many areas, the land has been cultivated continuously and the soil has become increasingly infertile. · In order for the crops to grow well, fertilizers have to be used to keep the land fertile, and pesticides to keep it pest-free. When large amounts of chemicals are used, they pollute the land and water, and are harmful to the environment. · The rotting stalks and leaves in wet fields will emit methane into the atmosphere, leading to enhanced greenhouse effects, global warming and even ozone depletion. · When rice is grown in the dry season using irrigation, the high rates of evaporation can cause salt to accumulate in the water and the soil. This causes the soil to become saline (containing salt), hard and infertile.
4) Why are traditional rice farmers usually poor? [2]
The traditional farmers are usually poor because they practice farming on a small plot of land. They also obtain seeds from the previous harvest and does not use chemical fertilizers or pesticides. Thus, the crop yield is low and it is only enough for their own consumption. They did not have surplus to sell or earn money from their farming activities, thus they remain poor. 5)
Refer to Fig. 1 below which shows the distribution of several crops grown in Malaysia. (a) Describe the distribution of rice and vegetables using map evidence only.[2]
Rice is grown below 5 metre, next to swamps, next to the river, farming area is small. Vegetables are grown near the farmers’ houses, next to the rice fields, very small area is used.
(b) Give reasons to explain the distribution of these two crops. [2]
Rice is grown on lowland; easy to flood the fields; water supply from river; grown for farmers’ need with surplus for sale. Vegetables are grown by farmers; they are likely grown for farmer’s own use and only surplus is for sale.
(b) Explain why oil palms are grown extensively in the map extract and in Malaysia. [4]
On the map extract The area shown on the map is generally low-lying, ranges from 0m to 25m high. The availability of large tracts of land and its proximity to a river makes it ideal for growing cash crop such as oil palm.
Malaysia
Palm oil are used in cosmetics, food, detergent and cooking oil. The export of the produce brings huge earnings to Malaysia. It provides jobs for thousands of people working at various levels in the primary and secondary industries.
1) State three reasons why wet rice cultivation is widely practiced in Asia? [3]
China, India, Thailand, Vietnam, Cambodia are some countries in Asia that practice wet rice cultivation extensively. · This is because the climatic conditions in most parts of Asia are suitable for · growing padi. These countries have high total annual rainfall above 1500mm · and high temperature of above 240C, which are favourable to grow wet rice. · As rice is a staple food in Asia, it is thus widely grown to support the large · population. · The fertile alluvial soils in the rivers plains and deltas in these countries are · ideal for growing wet rice too.
2) Why is wet rice cultivation a commercial enterprise in Thailand? [4]
70% of its population is farmers. · It is a commercial enterprise because wet rice cultivation is a labour-intensive industry. It provides employment for the large population, which are mostly unskilled or semi-skilled. · As the world’s biggest exporter of rice, it is important to the country’s economy · as it brings in revenue for the country. · The country can use the revenue collected to alleviate poverty and hunger or to · develop the country’s infrastructure. · It also helps to develop the secondary industries such as processing the harvested · rice in the rice mills, transporting, sorting and distributing and exporting rice to the · rest of the world.
3) What negative impact does wet rice cultivation have on the environment?[3]
In many areas, the land has been cultivated continuously and the soil has become increasingly infertile. · In order for the crops to grow well, fertilizers have to be used to keep the land fertile, and pesticides to keep it pest-free. When large amounts of chemicals are used, they pollute the land and water, and are harmful to the environment. · The rotting stalks and leaves in wet fields will emit methane into the atmosphere, leading to enhanced greenhouse effects, global warming and even ozone depletion. · When rice is grown in the dry season using irrigation, the high rates of evaporation can cause salt to accumulate in the water and the soil. This causes the soil to become saline (containing salt), hard and infertile.
4) Why are traditional rice farmers usually poor? [2]
The traditional farmers are usually poor because they practice farming on a small plot of land. They also obtain seeds from the previous harvest and does not use chemical fertilizers or pesticides. Thus, the crop yield is low and it is only enough for their own consumption. They did not have surplus to sell or earn money from their farming activities, thus they remain poor. 5)
Refer to Fig. 1 below which shows the distribution of several crops grown in Malaysia. (a) Describe the distribution of rice and vegetables using map evidence only.[2]
Rice is grown below 5 metre, next to swamps, next to the river, farming area is small. Vegetables are grown near the farmers’ houses, next to the rice fields, very small area is used.
(b) Give reasons to explain the distribution of these two crops. [2]
Rice is grown on lowland; easy to flood the fields; water supply from river; grown for farmers’ need with surplus for sale. Vegetables are grown by farmers; they are likely grown for farmer’s own use and only surplus is for sale.
(b) Explain why oil palms are grown extensively in the map extract and in Malaysia. [4]
On the map extract The area shown on the map is generally low-lying, ranges from 0m to 25m high. The availability of large tracts of land and its proximity to a river makes it ideal for growing cash crop such as oil palm.
Malaysia
Palm oil are used in cosmetics, food, detergent and cooking oil. The export of the produce brings huge earnings to Malaysia. It provides jobs for thousands of people working at various levels in the primary and secondary industries.
|
tantsuifung |
Latest page update: made by tantsuifung
, Apr 2 2009, 10:47 PM EDT
(about this update
About This Update
Edited by tantsuifung
1 word added 1 word deleted view changes - complete history) |
|
Keyword tags:
None
More Info: links to this page
|
There are no threads for this page.
Be the first to start a new thread.
