描述:
eat attention to adopting
various techniques to improve soil quality when plowing the soil, so that the soil could keep
sustainable fertility and high rate of yield.
描述:
teau the seeding season is cold and little
rainfall. Soil temperature,moisture and fertilizer is an important factor in crop yield. So in this
area dissemination conservation tillage of importance. Most of former researches in
comparison between conservation tillage and conventional tillage. This experimentation
compare with sereval conservation tillage's difference. Through this comparison, wind-water
erosion in the Loess Plateau ecologically fragile areas and application of a reasonable choice
of different measures to provide a reference of farming with a view to achieving the
sustainable and health development of agriculture. In this study, selection of test sites in the
Loess Plateau in northern China typical wind-water erosion area Shenmu, a no-tillage, straw
mulch, plastic film mulching, mulching ridge, ridge of the five kinds of different measures of
conservation tillage experiment, observe ground temperature,soil nutrients,soil moisture,yeild
and soil and water loss.
描述:
opment of agricultural tourism and to obtain
economic, social and environmental benefits of the measure of potential, but also for the effective
protection and rational exploitation of its resources of great significance.
描述:
of the Republic of
China. A large body of insightful research has been carried out on the issue in recent
years, yet there are still problems unsolved in the field.
描述:
rinciples of the theory" and "holistic principle", as the main study
followed the principles and methods, strive to occupy a wealth of research datas, focus on first-hand
information from the start, mainly from a literary perspective, but give due consideration to the
geographical composition, attempts to have a more thorough and systematic study and discussion.