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Technique for Top-Grafting Mixed Pear Trees to Nanguo Pear in Western Liaoning
1. Re-grafting. Whether a mixed pear top-grafted to Nanguo pear has survived can be determined 20 to 25 days after grafting. On surviving Nanguo pear scions, the bark remains green, and the buds begin to sprout; those that have not survived show shrunken, dried bark. Re-graft those that failed as soon as possible: in spring, cut off the dead stub and then cleft-graft; in summer, after the bark slips, green-wood bark grafting can be used. After re-grafting, cover promptly with paper bags to aid survival. If plastic bags are used, the high outside temperature can easily cause the scions to lose water. 2. Unbinding. After spring cleft grafting or side-veneer grafting, the new
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Under what climatic conditions is the sweet cherry (Western cherry) suitable for cultivation?
The sweet cherry (also known as the large cherry) has not been cultivated for long since its introduction to our country, only just over one hundred years. Cultivation is concentrated in the provinces along the coast of the Bohai Bay, with Shandong Province having the most. In recent years, many places have also tried introducing and cultivating it. But all have shown vigorous tree growth, excessive elongation of shoots, few flower buds formed, severe flower and fruit drop...
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