Research on impacts of certain technical measures on shan tea variety in the orientation to afforestation cultivation, sustainable crops and environmental protection

Vietnam has natural conditions suitable for the growth and development of tea plants. Tea production plays an important role in the structure of agricultural production and tea products are important export items. Growing shan tea in the form of forestation is a technique that is very suitable to the land conditions, labor and farming practices of ethnic minorities in the uplands. Out of seven cuttings at different time annually on: January 15; Fabruary 15; March 15; September 15; October 15; November 15; December 15, those of the last two (Nov. 15th and December 15th) brought the best productivity. Of 5 new seedling height standards respectively: seedlings of 20cm (± 5cm) high; of 30cm (± 5cm) high; of 40cm (± 5cm) high; of 50cm (± 5cm) high; and those of 60cm (± 5cm) high. The results showed that newly planted Shan tea seedling height reached 60cm ± 5 after 12 months, the root diameter reached 1.24cm; the number of grade 1 branches reached 13.6; Number of leaves / tree reached 216.6 leaves; and survival rate was 96.7% higher than control at 95% of confidence level.