When will Camellia oleifera be picked?

Taking Camellia oleifera variety "Chushuangzi" as an example, when it was picked before "cold dew" 10 day, the seed shell accounted for 46.3%, the seed kernel accounted for 53.2%, and the oil content of tea seeds only accounted for 17.9%. When picked five days after the "first frost", the seed shell accounts for 37.6%, the seed kernel accounts for 62.4%, and the oil content of tea seeds can reach 28.5%. Picking in advance, the cones are immature, the oil content of tea seeds is low and the water content is high; Picking too late, cone cracking, tea seeds scattered, difficult to collect, resulting in waste. Therefore, Camellia oleifera fruit should be picked in time and "three observations" should be made. \x0d\ One is to observe the varieties. Different varieties of Camellia oleifera have different fruit maturity. "Cold dew seeds" have small crown, upright branches, angles less than 30 degrees, small and dense leaves and thin skin, with 65,438+0 ~ 3 seeds per fruit, which should be picked when "cold dew" occurs. The "first frost seed" has a large crown and the branching angle is generally 40 ~ 60 degrees. The leaves are roughly thick and the fruit is large, with 4 ~ 7 grains per fruit. It should be picked when the "first frost" is ripe. "beginning of winter Seed" has a large crown, a branching angle of more than 40 degrees, large and sparse leaves and large fruit, with 7 ~ 10 seeds per fruit, so it should be picked at "beginning of winter". \x0d\ The second is to observe the color. In the mature season of Camellia oleifera, carefully observe the color of tea seeds. The surface characteristics of mature Camellia oleifera fruit are: shiny skin, yellow-red skin, white-green skin, complete hair removal, slightly cracked tea fruit and easy peeling. Pick cones at will and peel them off in the Camellia oleifera forest. When the tea seeds shine, peel them further. When the seeds are yellow and shiny, it proves that the cones are completely mature and can be picked at this time. \x0d\ The third is to observe the landform. Camellia oleifera is located in different geographical locations, and its maturity is also inconsistent. Generally, high mountains ripen first, and low mountains ripen later. The sunny slope ripens first, and the shady slope ripens later; Old forest ripens first, young forest ripens later; The barren land ripens first, and the cultivated land ripens later.