|
Sweet cherry , Shandong Province, the advantages of agricultural products , is also one of the species of fruit trees planted better efficiency in recent years around the active planning and development . Difficult for the current sweet cherry varieties to choose low yield , quality and poor , and to carry out the evaluation of resources and quality and efficient cultivation technology research . Aims to promote the healthy development of the province sweet cherry industry . This study in 2002-2004 in the test base of the Fruit Tree Research Institute of Fruit Tree Research Institute of Shandong Province , Yantai City , and Washington State University Center for Fruit Tree Research and Extension . Newly registered in North America in the past 20 years and Shandong introduction, cultivation of sweet cherry varieties , fruit size, flesh firmness , maturity and self- pollinated main traits evaluation , summarizes the typical experience of high-yield cultivation , sweet cherry quality efficient cultivation technology system . The main results are as follows : 1 finishing sweet cherry varieties resources to collect 80 copies , 10 copies of resources rootstocks its main traits evaluated . Fruit red type varieties accounted for 95% , and the yellow type varieties accounted for only 5% . Newly registered varieties in North America , in the self- pollinated varieties 54% ; 80% for a hard meat type varieties . Shandong main cultivation and the introduction of new varieties , fruit weight in less than 8 grams , 8-9 grams, 9 grams or more varieties each 1/3 ; distribution of soluble solids content of between 13.2-22.9 % . Fruit harvested early in the production , greatly reduced the fruit weight , soluble solids content , fruit seriously affect the quality of the goods . Gisela series bred in Germany performance of rootstocks resources on a dwarf tree early solid high yield traits excellent sweet cherry rootstocks growing to Gi6 as robust , high yield , Gi5 tree dwarfing moderation , early solid high yield . Sweet cherry flower buds sprout earlier, the Tai'an area generally 6 to 12 March , flowering in March 25 to April 8 , mature fruit growth period May 10 to June 15 , 30-65 days. , The sweet cherry preharvest experience rainfall varying degree of cracking, general 6.4-34.9 % ; 2 weeks before harvest spray of calcium chloride , low cost , good effect ; explored the impact of temperature , moisture fruit cracking .
|