Nectarines are planted in greenhouses, and their area and height are limited. Plastic pruning must be adapted to the growth of greenhouses, and it can also produce productive tree structures year after year. The plastic generally uses the north high and south low slope type population structure. The northmost one is 50 cm in height, the tree shape is spindle-shaped, the height is 1.5 meters; the southernmost one is 30 cm in height, and the tree is a happy-shape tree. 1 meter high; the central stem height decreases gradually from north to south, and the tree shape is the "丫" shape of the two main branches.
Pruning before the shed, adhere to the principle of "mainly thin branches, long stay and long release," remove the strong vegetative branches, disease and insect branches, leggy branches, loosing the dense branches, overlapping branches, drooping branches and slender branches. Short cuts to the central compound bud. The main branches and center stems that grow more upright are pulled apart. For medium and long fruiting branches, each extension shall be long-distributed, and the general branch weight should not exceed 10%, and the short-cut amount should not exceed 20%, so as to ease the growth and increase the fruit setting rate. When cutting branches, the thickness should be kept about 0.5cm. In the middle, the complex flower buds have longer mature fruit branches.
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