In the cultivation and management of fruit trees, whether timely harvesting is the key to affecting fruit quality, yield, storability, and income of farmers, then how to correctly determine the optimal harvest period of fruit? Look at the peel color. The vast majority of apple varieties mature from young fruit, and the color of the peel will change regularly. For example, the background color of the peel gradually changes from dark green to light green or yellow. Some varieties colored earlier, but the peel color is still green, only the peel color from green to yellow, the fruit is really mature. Some varieties, such as Jin Shuai, which are intended to be transported on a long-distance basis, can be harvested when the background color of the fruit is yellow-green, and they are best harvested immediately after harvest and harvested when the color changes to yellow. Look at the handle. When the fruit is truly mature, an isolated layer is formed between the base of the fruit stem and the fruit branch, and the fruit is slightly affected by external forces, and if it is rotated or raised, it will fall off. Look at the fruit growth period. Under normal climatic conditions, different varieties have relatively stable growth and development time in the same area, and the time from flowering to maturity is relatively constant. After the flowering stage, generally early maturing varieties mature within 60 to 100 days, medium maturing varieties mature within 100 to 140 days, middle and late maturing varieties mature between 140 and 160 days, and late maturing varieties mature between 160 and 190 days. See the seed color. During fruit development, the seeds of the fruit gradually turn brown. Peel the fruit, if the seeds have become brown or brown, indicating that the fruit is ripe. See the fruit hardness. Fruit hardness refers to the hardness of the fruit after peeling. As the fruit matures, the flesh will gradually become softer and the hardness will gradually decrease, but when it is not ripe, the flesh will be firm. Look at the fruit's maturity. The ripening period of the fruit can be divided into mature harvesting period and edible maturity period. Harvesting maturity means that the fruit volume no longer increases, the base of the fruit stalk has formed a layer that is slightly twisted and lifted off, and the ripening period means the period when the fruit is best eaten. Generally, the late-maturing varieties of apple were harvested within 3 to 4 weeks after they were harvested, and the two mature stages of the early-maturing varieties were basically the same. Therefore, for long-distance transport, early maturing varieties often need to be harvested in advance. China Agricultural Network Editor
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