The cracking of citrus fruits, especially the cracking of navel oranges, is mainly due to the unbalanced water supply, dry soil in the early stages of fruit development, and the late rain. In general, there are few cracks in the mountains, and there are many cracks in the plains. This is because the roots of the fruit trees in the orchard are usually distributed shallowly. The water condition of the trees is sensitive to the influence of soil moisture. The fruit trees in the mountain gardens are deep in roots and can absorb the moisture in the deep soil and can ease the trees. Body moisture changes. Orange trees that are in low moisture or high humidity environment all year round have less cracked fruit. In July-September, the citrus fruit entered a rapid expansion period, and began to accumulate fruit juice in the flesh. At this time, if there is continuous drought, then heavy rain drops again. The drastic changes in the water condition from dry to damp will cause the occurrence of cracking. Obviously increased. The main factors influencing fruit cracking in grapefruit are also related to the fruit shape. Usually, the more fruit-shaped, the more likely it is that fruit cracking occurs. Some citrus seed abortion and other factors will also promote the occurrence of cracking. The fruit cracking of citrus fruit is also directly related to the characteristics of the varieties, such as early-maturing Wenzhou oranges, local early tangerines, milk oranges and Nanfeng oranges in the broad-leaved oranges, navel oranges, Hamlins in the oranges, In Jin orange and Hongjiang orange, Yuhuan pomelo, Zaoxiang pomelo, 溪 Ximi pomelo and Duowei pomelo contained in grapefruit, there are different degrees of fruit cracking phenomenon. The following measures can be taken to prevent cracking of oranges: (1) For the fields that are prone to cracking, select the strains that have few crackers to cultivate; (2) Improve the soil and cultivate sound roots of orange trees; Cover the straw on the ground to reduce soil moisture The drastic changes in wetness; (3) Plan irrigation, that is, in accordance with the changes in the soil moisture content, in time to add water to the fruit tree, so that the fruit does not stagnate; (4) You can also use artificial pollination, smear or spray plant growth regulation. Agents, film bags and other measures to reduce the occurrence of cracking. In the late fruit enlargement period (July-October), spray citrus fruit with 20-50ppm gibberellin plus 0.3% urea, spray once every 7-10 days, spray 2-3 times, and control citrus fruit cracks. Some effect. However, improper use of gibberellin or excessive use of the gibberellin will cause the citrus peel to become thick, which may affect the appearance quality of the fruit. Therefore, most of the high-quality fruit cultivation does not promote the use of plant growth regulators.
CIP System
CIP System,Brewing Equipment,Wine Making Supplies ,Beer Supplies
Beverage Processing Machinery Co., Ltd. , http://www.nbbeerequipment.com