描述:
ttention, but
also agriculture and eco-environmental sustainable development important
problems. Farming-pastoral Transitional zone in north China, as our county
returning farmland to forest and returning cropping land to grassland are the
focus areas, natural environment and socio-economic conditions shown a
clear transition characterized by the transition zone of the interpenetration and
staggered distribution of agriculture and animal husbandry, which is curbing
desertification important ecological barrier, but also ecologically fragile belts.
描述:
be given when fully and rational use of local
climatic resources such as solar radiation, heat and water, while other conditions (such as soil
fertility, carbon dioxide concentration, cultivation level etc.)
描述:
duction in the area is
restricted by disadvantageous natural resources and environmental conditions,
including low arable land area per capita, frequent drought events and a landscape
dominated by mountains. Forage crop rotation systems could improve soil fertility,
increase crop外eld and provide quality forage supplies for livestock production.
Additionally, their adoption is considered a suitable means to advance sustainable
agriculture development. In this study, the role and status of forage crop rotations in
Tianshui city were studied.
描述:
est region,
which c
ombined with the
water-saving, agricultural soil and water conservation techniques, and then taken "
drought
resistance, reduce erosion, increase efficiency" as a principle.
描述:
od of Warring States
(475-221 B.C.), attracting scholars' attention and becoming one of important schools then.
After Qin Dynasty, scholars determining to study agriculture carried forward good
traditions of Non自is in the Period of Warring States, enriched researching contents and
fields, and enabled Non自is to develop in depth. In finial, those determining to study
agriculture formed a group with researching agriculture as its distinguishing feature. What
the group researched included agricultural ideologies, techniques of farming and cropping,
methods of operation and management, measures of fighting and preventing agricultural
calamities. The whole group showed its own styles in valuing agriculture and concerning
people's livelihood. And those agricultural ideologies, science and technology, methods and
spirits composed Nongjia's culture, the cream of which can afford us lessons to solve
today's new problems.
描述:
od of Warring States
(475-221 B.C.), attracting scholars' attention and becoming one of important schools then.
After Qin Dynasty, scholars determining to study agriculture carried forward good
traditions of Non自is in the Period of Warring States, enriched researching contents and
fields, and enabled Non自is to develop in depth. In finial, those determining to study
agriculture formed a group with researching agriculture as its distinguishing feature. What
the group researched included agricultural ideologies, techniques of farming and cropping,
methods of operation and management, measures of fighting and preventing agricultural
calamities. The whole group showed its own styles in valuing agriculture and concerning
people's livelihood. And those agricultural ideologies, science and technology, methods and
spirits composed Nongjia's culture, the cream of which can afford us lessons to solve
today's new problems.
描述:
conducted full irrigation (CK),
mild regulated deficit irrigation and moderate regulated deficit irrigation with melon varieties
of Ymdi and Yujinxiang in three growth stages including sowing to flowering time, flowering
to fruit expanding stage and fruit expanding to picking time.