Study On Different Cultivars And Planting Technology Of Ber (Zizyphus Mauritiana Lam) In Plastic Shed In Chaoyang

Ber, the latin name is Ziziphus mauritiana Lam, was grown in India. It's has the characters of growing quickly, fruiting early, high outcome, big fruit, maturing late, so it has been regarded as one of the most valuable and economic fruit trees. The study is specialized in the experiment contrasts of 11 kinds of Ber introduced to cultivate in Chaoyang, Liaoning, such as leaf character, fruit character, fruit quality and grafting technology in order to select cultivars of Ber which are suitable to be planted in greenhouse in Northern China. Compared with the same cultivars which were planted in land in Southern China, the results on Ber planted in the northern China show as the following.(1) The introduction of some cultivars is proved to be successful in greenhouse concerning such aspects as tree growth, flowering and fruiting, no severe plant diseases or insect pests were observed, and their native characteristics could be maintained well.(2) The different breeds have difference in fruit weight, size of fruit, as well as total acid, soluble solid, carbohydrate and Vc content. Sum up with these, Mizao, Cuimi and Gaolang-1 are proved to be relatively excellent for the fruit character and quality, even better than the same cultivars planted in the southern China in the fruit quality.(3) In northern China, the best time for Ber grafting is July and the best method is bark inserting grafting which could be used in production from now on.(4) Pruning could adjust the trees' shape and accelerate their growth and fruiting rate and the best time for the coppice management is from late March to April annually with an optimum height of 30～40cm.