How to determine the harvest period of kiwifruit?
1. Late fruit harvesting is not good. As the price of kiwifruit rises, some fruit growers do not pick it until the harvest period and postpone it until the frost falls. The purpose is to sell the fruit at a high price. Since the fruit has softened on the tree, not only cannot sell the high price, but sell it at a lower price, and merchants dare not accept it. Therefore, fruit growers must strictly follow the ripening period of the varieties to harvest.
2. Determination of the harvest period. There are many varieties of kiwifruit, and the period from flowering to harvest is generally 140 to 150 days. The fruit growth period between varieties varies greatly, and the maturity period starts from August to the end of October. In my country, the soluble solids content reaches 6.5% as the lowest index for harvesting (referring to the fruits that go directly to the market after harvest or the storage period is less than 3 months), and the soluble solids content reaches 7.5 for the longer storage period after harvest. After harvesting, the storage, shelf life and flavor quality of the fruit after soft ripening are better.
Early and mid-October is the best time to harvest Hayward, Xuxiang and Jinxiang. Hayward soluble solids content of 6.5% is more appropriate; Xuxiang and Jinxiangtang are harvested at 6.5% is the best standard. When determining the soluble solid content, randomly select 10 representative fruits in the garden, cut the fruit, squeeze a drop of juice onto the handheld refractometer, and start harvesting when the measured average soluble solid content reaches 6.5%.
3. Harvesting method. The fruit should be picked in the morning and evening when the weather is clear and cool, or in cloudy weather. Avoid harvesting at noon and high temperature. Otherwise, the fruit will absorb a large amount of field heat and not dissipate, which will easily accelerate the softening of the fruit. It is not suitable to harvest when it is raining, foggy, or the dew is not dry. The moist surface of the fruit is good for the propagation and infection of pathogenic bacteria.
To avoid mechanical damage during fruit picking, fruit pickers should cut and smooth their nails and wear soft gloves. Wooden boxes, fruit baskets, etc. used should be covered with soft bedding, such as plastic woven bags, coarse paper, etc., to avoid fruit bumps.
Fruit picking bags should be used when picking fruits. It is appropriate to hold about 10 kg of fruits. The bottom of the fruit bag is open. A curtain is sewn from the bottom and hung on the strap at the top of the bag. The bottom opening is tightly sealed with the curtain. The fruit fell out. To transfer the fruit in the fruit picking bag into the transfer box, put the fruit bag with the fruit into the box gently, remove the hook of the curtain, lift the fruit bag gently, the fruit gently slides from the bottom opening Into the fruit box.
When picking the fruit, hold the fruit with your hand and gently press the stalk with your fingers. The stalk will be broken near the fruit, and the remaining stalk will remain on the tree. Handle with care when picking, try to avoid stabbing, crushing, and bumping the fruit. To reduce the number of inverted baskets and boxes. Attention should also be paid to smoothing the transportation roads, driving slowly during transportation, avoiding sudden stops, and reducing vibration, collision and extrusion.
4. Pre-cooling the fruit after harvest. After the kiwi fruit is harvested, the field temperature is about 20℃, the surface temperature of the fruit is high, and the temperature inside the fruit is higher. After pre-cooling, the surface and internal temperature of the fruit is lowered, which is close to the temperature of the cold storage. Chilling injury occurred due to unsuitability after entering the warehouse suddenly.
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