How and where does rice grow?
Rice is one of the oldest cereal crops in the world. Due to its beneficial properties and good digestibility, this product is very popular, and in some countries it even has the honor of being a national dish. Proper cultivation of crops allows you to get an unprecedented harvest of the most valuable product.
Culture Features
Rice is a grain that contains carbohydrates (80 g), proteins (7.13) g, fats (0.66 g), water (11.61 g). It also contains B vitamins, iron, copper, selenium, trace elements. The grain has a shell, under which the white part is located. It is most commonly eaten.
The root system of the plant has a fibrous structure, it contains cavities. These cavities ensure the delivery of oxygen to the soil flooded with water.
In the process of growth, rice looks like an ordinary bush with nodular stems. The thickness of the stems ranges from 2 to 4 mm. Height is 40 cm or more. In some cases, the length can reach 4 meters.
The leaves are oblong in shape. The inflorescence looks like a corolla up to 20 cm long. It can be grouped in one direction, or it can be wide open. On it are spikelets with short legs.
At first, the plant is green. As it matures, brown shades appear.
Rice culture appeared several thousand years ago. As it spread around the globe, the adaptive qualities of the plant appeared, helping it to survive in various weather conditions.Chernozem or silty soil, which contains a lot of organic matter, is suitable for growing an annual plant. Rice ripening can last up to 120 days. In order for rice to be stored for as long as possible, it is necessary to provide it with a warm, humid growing environment.
Due to its beneficial properties, rice culture is widely used in various spheres of life. It should be noted that cereals are used not only in cooking. It is effectively used in medicine, production. With the help of it, paper products, baskets, ropes are made. Straw is an excellent feed for livestock because it contains many nutrients.
Why does it grow in water?
Rice crop prefers very high humidity. It is through the water that all the necessary substances are fed. In addition, water rids the plant of weeds, allowing you to get a bountiful harvest.
To provide this crop with suitable conditions for growth, the land is zoned. Water is poured into the formed zones. At the time of the appearance of the first shoots, the soil should be saturated with water.
There are several ways to water rice.
- Constant. The soil is always in water.
- Partial. At the beginning and at the end of plant growth, the water layer is made smaller.
- Temporary. During certain periods of plant growth, the desired water level is maintained.
It is also important to note that the cereal plant prefers shade. The most favorable temperature for growth is 18 degrees above zero. Although rice will produce a crop and at a temperature range of 12 to 40 degrees above zero.
Depending on the thermometer, rice takes a different amount of time to get saturated with water.So, at a fairly critical temperature of 12 degrees above zero, the plant will need a week to saturate with water. The higher the temperature, the less time it takes to absorb moisture, which is necessary for full growth. For example, at a temperature of 30 degrees, it will take only 12 hours.
Varieties
Around the world there are about 40,000 types of rice. In China alone, 10,000 different varieties have been bred.
All varieties differ according to the following criteria:
- type of cultivation;
- growing area;
- duration of cultivation;
- dimensions;
- color;
- grain density and shape.
On the shelves of shops you can find about 20 varieties of rice, which differ in the type of processing, price. At the same time, a low price does not mean a poor quality product.
In addition to the usual white rice, there are grains of brown, brown and even black, which is inherent in wild varieties. The color depends on the type of cleaning of the grain shell.
It is important to note that the darker the color, the more natural the product is and the more useful substances it contains.
In Asia, an unusual variety of rice is grown, which has a brown-brown hue. Its peculiarity lies in the fact that during cooking, the size of the grains increases several times. The longer the shelf life of the beans, the better they taste.
Depending on the size of the grain, the following types of rice are distinguished.
- Long grain. This type is often used for preparing basic dishes. The size of the grain is 8-9 mm. The product is airy and does not stick together.
- Medium grain. This type has dimensions of about 5 mm. Most often used for making desserts. The product has a uniform texture, retains its shape after cooking.
- Small grain. The grain size is approximately 4x2 mm.The product has a sticky texture, contains a large amount of starch. It is often used to make sushi.
The following varieties of rice are widely distributed.
- Basmati. The product has long grains. It has a pleasant taste, fragrant smell. It is a traditional Indian dish.
- Jasmine. The product is represented by long thin grains of white color. Has an aromatic smell. It is a traditional Chinese dish.
- Wild. The grains are dark in color up to black. The length of such fruits can be different.
According to the type of processing, the following types are distinguished.
- Sanded. Rice is white. The grains can be in the form of a circle or oval, medium or large.
- Brown unpolished. This type of culture is represented by various grain sizes. There are long, short, medium grains. Unlike traditional white rice, only the rice husk is removed during processing. The germ and bran remain in the product. Such a product is considered the most useful.
- Paddy. This is an unprocessed grain. Its shelf life can reach several years.
- Steamed. Such grain is pre-soaked in liquid. Then steam treatment takes place.
- Broken. During processing produce a fracture of the grains. Large parts are used for cooking, and small particles are ground into flour.
- Shell. After grinding the grain, the outer shell remains, which serves as a nutritious feed for livestock.
Where are they grown?
Asia is considered the birthplace of rice. A tropical climate is suitable for grain crops, so it can be found in India, Indonesia, China, and America. In Russia, rice fields prevail in the Krasnodar Territory, namely in Krasnodar. The Kuban has the most suitable climate for growing rice.The presence of a special type of soil, which is located in the lower reaches of the Kuban River, allows you to get the best harvest.
Rice also grows in the CIS countries, for example, in Uzbekistan and Azerbaijan. It can be seen in Australia, Vietnam, Japan, the Philippines. On the territory of Russia, culture can also be found in the Astrakhan region, Primorye, and the Chechen Republic.
Wild varieties of rice can be found in Canada and America. In appearance, they bear little resemblance to traditional grains and are very resistant to environmental influences. Their favorite localization is small lakes. It should be noted that such rice is difficult to process, and also difficult to collect. Therefore, it is not cheap.
Plains and even mountainous surfaces are also suitable for planting rice.
There are various fields for growing crops.
- Dry valleys. The location of such fields excludes the creation of artificial devices for additional irrigation. Due to natural conditions, the soil is intensively saturated with moisture.
- Estuary. The main task is performed by the bays of the rivers, which are used to grow the rice field. For such a field, a special variety of rice with a minimum ripening period is selected.
- Irrigated. Special flooding of the area is carried out with the help of dug pits. Water is removed two weeks before harvest. After the soil dries up, the crop is harvested.
Agricultural technology
The technique of growing rice involves carrying out certain activities to create favorable conditions.
- Before sowing the seeds, they are cleaned. To do this, sorting mechanisms are used. After cleaning, a quality check is carried out. Unsuitable seeds are thrown away.
- Before sowing, about a week, the seeds are dried. Then put in warm water for several days.After that, they are dried again and only after that they are laid in the prepared soil. The depth of the seeds should not exceed 8-10 cm. Rice is sown in rows, crosswise or randomly from the plane. It should be noted that in Asia they prefer to do everything by hand, while in the West they more often resort to using the latest technology.
- The soil is prepared in advance. To do this, it is treated with steam or forage grasses and legumes are planted, which contribute to the drying up of marshy areas. In addition, herbs are the best source of nutrition for the earth. Exposure to steam helps the soil recover faster.
It is important to note that after growing legumes or grasses, rice can be sown for three years in a row. If we resort to the technology of tillage with steam, then such soil is suitable for sowing rice crops only for two years in a row.
In Asia, there is a special technique for growing cereals. In order to select the most viable grains that will give a good harvest in the future, the seeds are sown in greenhouses. Mud with water is used as soil. After the length of the sprouts reaches 9-10 cm, they are placed in water. Then, when the length of the sprout reaches 45-50 cm, the plant begins to bloom, emitting the smell of cooked rice.
The harvested crop is dried, left in special places where temperature and humidity are strictly controlled. Properly stored, grains stay fresh for up to a year.
When growing rice in the Kuban, modern technology is used.
The whole growing process is divided into three stages.
- The soil is watered abundantly. Do it in the spring when the weather is warm.
- The second stage is started after the plant grows up to 15-20 cm. The field is intensively flooded with water.
- The third stage involves the drying up of the soil.Work is carried out approximately two weeks before harvest.
The required water level is maintained with the help of modern devices.
In Russia, several types of technologies for growing grain crops have been developed that allow you to get a high yield, for example:
- tillage with the help of mechanical leveling of the surface, fertilization, saturation of the soil with herbicides;
- processes using technical units, plows, allowing to obtain smooth plowed soil;
- technology without the use of fertilizers allows the cultivation of varieties of dietary rice;
- modern herbicide-free agricultural technology allows you to effectively deal with weeds.
The use of modern technological methods for growing rice crops has expanded the scope of this invaluable product, which is known throughout the world.
How rice is grown and harvested, see the video below.