Effects of melamine on biological characteristics and fruit quality of sweet cherry in central Guizhou
In order to solve the problems of irregular flowering and low fruit-setting rate of sweet cherry in central Guizhou,four-year-old sweet cherry'Meizao'was used as material to study the effects of spraying different concentrations,the different brands of melamine,the spraying time and additives on the biological characteristics and quality of sweet cherry.The results showed that spraying melamine had significant effects on germination,flowering satage,flowering time,flowering regularity and fruit setting rate of'Meizao'cherry,however,it had no significant effect on the number of complete flowers,the growth of new shoots and leaves.The treatment of spraying melamine on February 1st could effectively promote the germination and flowering of sweet cherry,among which the treatment of 2.0％melamine+1.0％tween was the earliest except spraying on January 17th and treating with 2.0％cyanamide+10％garlic extract,the flowering regularity was improved by 2％～5％.In addition,the two treatments of 2.0％cyanamide+10％garlic extract and 2.0％cyanamide+1.0％tween temperature could significantly increase fruit setting rate by 6％～9％compared with the control.The yield of the strain treated with 2.0％cyanamide on February 1st was the highest,but there was no significant difference with other treatments.In comparison,spraying 2.0％dicyandiamide or 2.0％dicyandiamide+1.0％tween on'Meizao'sweet cherries in central Guizhou in early February could promote the germination and flowering of sweet cherries,improve flowering regularity,fruit set rate and yield.
melaminemiddle region of Guizhousweet cherrybiological characteristicsfruit quality
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