Reasons for citrus cracking fruit: First, the differences between varieties. In the same orchard, different varieties have different cracking conditions, and the thickness of the skin is uneven, especially the thinner varieties of the top skin are most likely to crack the fruit. The second is caused by drought. Sudden rainfall or irrigation after long drought is the main precipitating factor. In the prolonged drought of citrus fruit, the peel of the fruit shrinks and grows slowly. The rain absorbs much water and grows rapidly. The growth of the pericarp has not yet fully recovered, and the growth rate is slower than that of the flesh, resulting in the peel being cracked by the bulge of the flesh. Open, produce mechanical cracks. The third is the effect of soil moisture. For example, the soil moisture content is often saturated, causing the new roots to suffocate and suffocating. When the rain stops, it can cause cracking. The previous soil water can further aggravate the occurrence of cracking. Prevention methods are described as follows: 1. Maintain a high and moderate moisture content in the soil so that the citrus water supply does not change drastically. In times of drought, timely irrigation, generally no rain for two consecutive months, it is necessary to fill a water permeable drought, in the high temperature and drought season requires 10 days irrigation, tree trays to increase coverage, prevent soil moisture evaporation. When it is time, it should be drained in time, and after the heavy rain, shallow cultivator will be carried out. Do not apply fertilizer immediately after long droughts. 2. Increase the application of phosphorus and potassium fertilizers and apply leaf surface fertilizers. At the end of July or mid-August, 50-70 kilograms of human and animal manure water per plant was applied, 0.3 kg of urea was added, and 0.2 kg of potassium chloride was used. After the fertilization, soil and irrigation were promptly applied. Too much citrus fruit should be increased nitrogen fertilizer to increase the thickness of the peel. During dry period, different types of foliar fertilizers are alternately sprayed every 7-10 days, such as spraying Guoguang triacontanol and urea at the beginning of drought, followed by application of potassium dihydrogen phosphate and Guoguang amino acid potassium, and the stable high temperature during the dry period. At the stage, with the liquid leaching solution, spraying foliar fertilizer with ammonium molybdate for 48-52 days before picking, such as Guoguang amino acid molybdenum, “Hongtianâ€, etc., can both reduce cracking and promote fruit enlargement. 3, to balance the growth and development of skin and pulp. In the period of prolonged drought and no rain, citrus fruit can be used for comprehensive prevention and treatment with Guoguang cracking fruit. The cracking fruit must be sprayed with 600 times liquid in the early evening to spray the fruit at the crown. The lower part of the canopy that is easy to produce cracks is the key part of the spray. . Spray once a week, spray three times, spray once before heavy rain, its anti-cracking effect is more than 95% higher than other methods, basically can solve the impact of fruit cracking, the principle is: cracking fruit must contain a variety of high-activity substances And various chelated nutrients (such as potassium, phosphorus, boron, calcium, rare earth, etc.), easy to absorb, can provide a comprehensive balance of nutrients and regulating substances for the growth of fruit and pulp, promote its balanced growth, regulate the peel and pulp Synchronous development to prevent the occurrence of cracking. 4. The fruits that have been cracked should be removed in time so as not to continue to consume tree nutrients and water, and at the same time prevent the invasion of pests and insects. Foot of ningxia hong xingda incense Organic Apple fruit suborbicular, fruit surface color yellow green, most with orange chardonnay fruit surface, covered with bright red stripes, pulp yellow-white, succulent crisp, sweet, rich fragrance, quality first-class; The fruit has a sugar content of over 15%, more than 4% of the national average, and the flesh is tight and crisp and sweet, which is widely loved by consumers all over the world. There is a longer optimal consumption date than any other apple, not even refrigerated. It can be kept for 4 months at normal temperature. If refrigerated, Fuji can be kept for 5--7 months. Organic Apple Organic Apple,Crisp Sweet Apple,Ningxia Organic Apple,Organic Gala Apples Ningxia hongxingda fruit industry , https://www.hxdfruit.com
Altitude: high altitude area light, clean air, environment close to original condition, no industrial pollution. With an average elevation of 1160-2900m, the central health center has a strong uv light, which produces the natural pollution-free apple, which conforms to the concept of a modern green diet.
Temperature: moderate temperature can avoid the chance of fruit tree encountering disease. The average temperature in ningxia is 8.4 degrees Celsius, which has an important influence on the growth, development, yield and quality of apple. The piedmont apple is thriving in such a good environment.
Humidity environment: moderate amount of rainfall provides necessary conditions for apple's growth. The annual rainfall in the central health region is 186 millimeters. The fruit is slow to grow and the fruit is hard and hard, which fully guarantees the fruit's sugar content and the relatively average size of apples.
Sunshine condition: apple is the fruit tree, the central health area of the whole year is nearly 3,800 hours, is beneficial to the Apple Fruit coloring. The piedmont apples are red and bright.
Temperature difference factors: ambassador apple nighttime respiration weak temperature gap between day and night, consume less organic matter, the accumulation of organic matter during the day more, that apple store down a large number of glucose sugar candy, etc have better taste. The average diurnal temperature difference between apple and apple is 14 degrees centigrade, and the larger diurnal temperature difference ensures the sweet and delicious characteristics of the apple.
Other factors: frost can make apple blossom and fruit, which can cause frozen flower jelly, which is bad for apple's production. The piedmont apple has been kept at least 167 days without frost for the whole year, which minimizes the influence of apple on yield and quality.
Scientifically Control Citrus Fruit Cracking
In June and July of each year, after the second physiological fruit drop, the citrus fruit will not fall, but then there will be different degrees of fruit cracking. The peak of fruit cracking usually occurs in early August, and from the end of August to the beginning of September. Citrus fruit cracking is one of the important physiological diseases during citrus fruit growth. It occurs in various places and causes fruit drop in the fruit period. Cause a lot of production cuts, and will induce pests and diseases, causing citrus fruit rot.