Effects Of Different Rootstocks And Shaping Methods On Growth And Fruiting Ability Of Sweet Cherries

This experiment was conducted in Shijiazhuang in 2017 and 2018.Three varieties of sweet cherries were selected as the test materials: "Tieton","Shuijing" and "Shamidou".The grafted rootstocks were Chinese cherry(Daqingye),Gisela5,and Gisela6.This experiment investigation and statistics of various cherry experimental areas base on two-year by different rootstocks?varieties?shaping methods and pruning techniques,The impact of systematically studied by rootstocks,varieties,shaping methods and pruning techniques on early flowering and early yield of cherries.The research results show that:1.The flowering period was consistent in three cultivars,and the rootstocks had no effect on the phenological period of sweet cherry varieties.2.Three years old sweet cherry,Gisela 5 was used as a rootstock,and the rate of flowering was 100 %,Gisela 6 was used as a rootstock,and the rate of flowering was63.6 %,Daqingye was used as a rootstock,and the rate of flowering was 0;Four years old sweet cherry,Gisela 5 was used as a rootstockl,and the proportion of fruiting branches was 15.0 %,Gisela 6 was used as a rootstock,and the proportion of fruiting branches was 9.5 %,Daqingye was used a rootstock,and the proportion of fruiting branches was 6.4%.The proportion of plants that form flower buds was 100%.3.Four years old of young trees with Gisela5,The proportion of fruiting branches of the “Tieton” was 15.0%,and the “shuijing” was 29.0%,and the“shamidou” was 35.6%?the “shamidou” had a large amount of flowering,the second was “shuijing”,“Tieton” was the lowest.4.The four-year old sweet cherry tree(Gisela5 rootstock)was used as the investigation material,The proportion of fruiting branches by one-sided trees was higher than that of spindle-shaped trees;The difference in four-year old plants was not significant.Using the experimental materials of five years old sweet cherry(Daqingye)varieties,spindle-shaped trees 82.5 kg per 666.7 m2 of production,one-sided trees199.8 kg per 666.7 m2 of production.5.The form flower buds rate via cut new shoots treatment was 100%,and the proportion of fruiting branches was 32.2%;The proportion of plants that form flower buds in sweet cherry trees treated with doxorubicin treatment was 100 %,and the proportion of fruiting branches was 26.6 %;The proportion of plants that form flower buds in sweet cherry trees treated with root breaking treatment was 100 %,and the proportion of fruiting branches was 29.2 %;The proportion of plants that form flower buds in sweet cherry trees treated without any treatment was 100 %,and the proportion of fruiting branches was 15.0%.