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The average population growth rate in Vietnam in the early 1990’s was 3.5%, but it is now slowing to 1.35%. This may be due several factors; a decreasedin fertility rates and better education provided to the ethnic minority groups who traditionally had large families and an increase in living standards. The Mekong Delta population growth rate...

156 trang | Chia sẻ: ttlbattu | Ngày: 21/12/2012 | Lượt xem: 1964 | Lượt tải: 0

The Government of Vietnam (GoV) has embarked on a massive tree plantation program. By 2010 it plans to establish an additional 5 million hectares of plantations on cleared land, over and above the current plantation estate of one million hectares, plus the equivalent of more than 50,000 hectares of community forests in scattered plantings. Th...

7 trang | Chia sẻ: ttlbattu | Ngày: 21/12/2012 | Lượt xem: 1917 | Lượt tải: 0

The Government of Vietnam (GoV) has embarked on a massive tree plantation program. By 2010 it plans to establish an additional 5 million hectares of plantations on cleared land, over and above the current plantation estate of one million hectares, plus the equivalent of more than 50,000 hectares of community forests in scattered plantings. Th...

7 trang | Chia sẻ: ttlbattu | Ngày: 21/12/2012 | Lượt xem: 1953 | Lượt tải: 0

The terms ‘seed stand’ and ‘seed production area’ are generally referred to as “A plus stand that is generally upgraded and opened by removal of undesirable trees and then cultured for early and abundant seed production”. These two terms are often treated in different context. In somecountries, the term‘seed stand’ refers to a planted forest ...

14 trang | Chia sẻ: ttlbattu | Ngày: 21/12/2012 | Lượt xem: 1819 | Lượt tải: 0

The Government of Vietnam (GoV) has embarkedon a massive tree plantation program. By 2010 it plans to establish an additional 5 million hectaresofplantationson bare hills and degraded forest lands, over and above the current plantation estate of one million ha, plus the equivalent of more than 50,000 hectares of community forests in scattered ...

44 trang | Chia sẻ: ttlbattu | Ngày: 21/12/2012 | Lượt xem: 1869 | Lượt tải: 0

The Research Centre for Forest Tree Improvement (RCFTI) currently produces 100 kg of genetically improved tree seed from over 40 seed producing stands (seedorchards or seed production areas). The seed represents 15 species which are regarded as key species for commercial and social application in Vietnam and other similar international enviro...

19 trang | Chia sẻ: ttlbattu | Ngày: 21/12/2012 | Lượt xem: 2010 | Lượt tải: 0

Some hatcheries established early at 1966 „ Some hatcheries established at 2005 „ The most hatcheries established during 1982-1984 „ A artificial technique for common carp at both state and private hatcheries, re-production 1-3 per year

19 trang | Chia sẻ: ttlbattu | Ngày: 21/12/2012 | Lượt xem: 2066 | Lượt tải: 0

Both adults and nymphs of psyllid attack plant by sucking cell sap of the young shoots. Damage leaves become curly or distorted. Infested leaves and fruits may drop prematurely.  Psyllid’sucking can transmit the bacteria cause Greening Disease or Huanglongbing”(Liberobacter asiaticus)

24 trang | Chia sẻ: ttlbattu | Ngày: 21/12/2012 | Lượt xem: 2324 | Lượt tải: 0

Mong Cai pigs are mainly kept in the rural households (80-90% of the local sow population) in two provinces of Thua Thien Hue and Quang Tri, where the climate is extremely harsh with frequent floods and droughts. Smallholder animal production with little capital and lack of knowledge and experience has hindered the application of new technical a...

10 trang | Chia sẻ: ttlbattu | Ngày: 21/12/2012 | Lượt xem: 1863 | Lượt tải: 0

Before you start to use the Seeds Database, you should be familiar with the forms and form controls usedin the system. A form control is a component of a form like a button or text box. The followingsections will describe each of these components and describe how they function in the system. Apart from the functions offorms and form control...

73 trang | Chia sẻ: ttlbattu | Ngày: 21/12/2012 | Lượt xem: 1982 | Lượt tải: 0