V. Прочитайте текст "Aeration Irrigation", письменно ответьте на вопросы.

1. What does aeration irrigation mean?

2. What are the advantages of aeration irrigation?

Aeration Irrigation

The principle of aeration irrigation involves a combination of air and irrigation water.

Basically aeration irrigation means reducing the water application rate to approximately 50% of the soil intake rate and irrigating a set for a period twice as long as would normally be used. In theory, air is taken into the soil along with water when this lighter application rate is used.

The advantages of this method are the elimination of soil compaction, water runoff, and the overall improvement of the soil structure. Silt particles are never disturbed and a supply of air and oxygen is always present in the plant feeder root zone.

Maintaining this condition means increased activity of soil bacteria and microorganisms which leads to soil improvement through the movement of carbon dioxide, ammonia, nitrogen and minerals. Greater yields have been a characteristic result when crops were sprinkled at this light application rate.

Aeration Irrigation - освежительный полив

Контрольное задание № 2 вариант 3

I Перепишите следующие предложения, найдите и подчеркните в них причастие, герундий или инфинитив, определите их функцию в предложении, переведите предложения на русский язык.

1. Quantity, quality and location of water and power sources are all important factors in planning a sprinkler system.

2. By conserving land resources we increase the wealth of our nation.

3. In wet areas the degradation of soils is linked with accelerated runoff and increased silt load of the rivers.

4. Much is being done to improve soil fertility.

5. To prevent erosion by the wind tree belts equal to the whole area of Ireland are planted down the banks of the Volga.

6. To irrigate more hectares of land one must consider capacities of water supply.

II Перепишите предложения, найдите и подчеркните в них объектный и субъектный инфинитивные обороты. Письменно переведите предложения,на русский язы, принимая во внимание, что объектный и субъектный инфинитивные обороты соответствуют большей частью придаточным предложениям.

1. Depth of plowing seems to be less important than time of plowing.

2. We expect every student to know the difference between the species.

3. The agronomist wants the crop to be watered twice a week.

4. Wheat is known to be adapted to different soil and climatic conditions.

5. New uses of plants are expected to be found in the nearest future.

6. The most important plants in the word are said to have been grown 4000 years ago.

III Перепишите английские предложения, найдите и подчеркните в них зависимый или независимый причастный оборот. Переведите предложения на русский язык.

1. All land is utilized for arable and livestock farming, the area under forests being only 0.02 ha per head of the population in the Netherlands.

2. The direction and speed of water movement and the soil's holding capacity must be taken into account when considering and planning subsurface irrigation systems.

1. The water vapour being cooled, precipitation takes place.

2. Kerosene is the fuel used in jet engines.