Each lesson consists of an Introduction, Vocabulary section, Reading, Grammar section, and an Assignment. The Reading and Grammar sections also include practice exercises. The lessons get more complex as you progress through the course. It is suggested that you proceed through the course starting with lesson 1 and continuing through to lesson 40. It is also best if you proceed through each lesson, starting with the Introduction and continuing through to the Assignment.
Tuesday, March 22, 2011
English for Agriculture: unit 2 LOWLAND CULTIVATION reading
Read the following article:
Traditional Lowland Rice Cultivation
Lowland rice is the most important crop in most parts of Asia.
Farmers levelthe land and build bunds to hold water.
They flood the fields with water and plow to get rid of weeds and to puddle the soil to prevent the water from seeping away.
They transplant rice seedlings, weedthe fields and finally, harvest the grain.
Irrigation is vitalfor high yields.
Most rice is grown in the lowlands because there is enough water, fertile soil and level land.
Plowing, transplanting, weeding and harvesting all take a lot of work.
Soil fertility variesfrom place to place, but lowland soils tend tobe more fertile than in the uplands.
Traditional methods produce relativelylow yields of rice.
Farmers also grow crops on the bunds and keep fish in the paddies.
They collectfrogs, shellfish and snails that grow naturally in the rice fields.
Over the centuries, farmers have selected and planted rice seeds that yield well, resist pests and diseases, and taste good.
Traditional farming uses many different varieties of rice.