Rake-rake citrus can reduce the heat in human body after eating, which is dark orange and shiny, with small, dense and protruding oil spores; The peel is thin, tightly wrapped and easy to peel; The pulp is dark orange, crisp and juicy, the capsule wall is thin, the residue is bipolar, the flavor is rich, and the soluble solids are 12 ~ 13%.

Sichuan's mature rake-rake citrus has a hollow peel, which is separated from the pulp, and the thin skin feels soft when pinched, so Sichuan people call it rake-rake citrus. The reason why it is also called "seeing in spring" is that its maturity coincides with the arrival of spring, which means beauty.

Chunjian is a hybrid of Qingjian and Japanese Ponkan F-2432 in 1979. 1999 was introduced by China Citrus Research Institute. 20 1 1 The citrus variety "Chunjian" introduced by Fruit Research Institute of Fujian Academy of Agricultural Sciences and Sanming Economic Crop Technology Extension Station passed the variety identification in Fujian Province.

The origin environment and morphological characteristics of rake-rake citrus;

Rake-rake citrus has been introduced and cultivated in Jiangxi, Fujian, Sichuan, Chongqing, Hunan and Zhejiang. When building the garden, the slope should be below 25. In mountainous and hilly areas with a slope of 6 ~ 25, horizontal terraces should be built when the garden is built. Choose the south slope and southeast slope sheltered from the wind and sunny, or places with good microclimate conditions on the shore such as reservoirs and lakes, and avoid building gardens in low-lying places and tuyeres.

The tree is upright, with small branching angle, high branching rate, strong branching force and few thorns. When pruning young trees, we should pay attention to wiping buds and fixing tips to form a crown with reasonable structure and vigorous growth.

The leaves are rectangular and waxy. The tree body, branches and leaves are similar to citrus. The fruit is oblate or obovate, and the fruit is large. Generally, a single fruit weighs 230 grams, and the largest fruit can reach 460 grams.