Studies On Green And Superior Synthetical Complete Sets Of Production Technologies And Clonal Selecation Of Ku'erle Fragrant Pear

Green fruit production has become one major tendency of the world fruit development. Xinjiang has favorite environment conditions of green fruit production. This research consists two experiments:(1) According to the green food production standard, through the field test, the research formulates the Korla fragrant pear green high quality production techniques; (2) Using clonal selecation combining the RT-PCR examination technique, making use of the comprehensive system-index method to select excellent plants. Main research contents are as follows:1. The results of The Korla fragrant pear green high quality production techniques indicate that the production increase rate use the biology bacterial fertilizer is 11.4%-20.3%, the production increase rate use compound fertilizers is 16.1%-36.0%; Adding appropriate amount of trace elements into the fertilizers can increase the yields and the quality of fruit. The result of fruit bag on fruit shows that the white bags of plastic used 30 days of after blooming have the best effect. Pinch off the calyx deeply 10 days after blooming has the best effect. The fragrant pear peel become thick after spraying Kangjie, the outward appearance quality drops, the reasons still need to further study. Several different bio-agrochemical alternation usage, which effectively prevent the occurrence of the pest, and the insect fruit rate is 0‰, the pesticide residue accord with the green food standard, it proves that biological pesticide have reliability in production. "9281" and "843" treat the rotten sickness recur rate are 14.4% and 17.6% separately. Preventing Yellows sickness must increase the organic or trace element fertilizers in autumn. Measure the photo-synthesis of three kinds of trees, the result shows that daily photo-synthesis changes has two peaks. the type of 'kaixin' has the strongest ability of photo-synthesis. The season variety lowers after going up first; The light saturation point and lights compensate point are 1400 E m^-2 s^-1 and 20 E m^-2 s^-1 respectively. The chlorophyll contents and Pn (P=0.055>0.05) have no significant linear correlation.2. The investigation shows that there are no differences between the excellent plants and other fragrant pear trees on phenophase. Use RT-PCR examines virus method to find No.24 and No.29 do not take the ASPV and ACLCV two kinds of viruses, the other all takes the virus. Comprehensive system-index method results show that if take no account of the virus factor, No.22 can be selected, otherwise, No.24 can be selected.