1, symptoms: The symptoms vary according to the variety of rose. Some appear as mosaics; some show a yellowish uni-curve chlorotic zone at the tip or middle or near the base of the leaf, or a systematic ring spot, chlorotic chlorotic spot; some show yellow veins, leaf malformations And plant dwarfing. 2. Pathogen and incidence status: Mosaic disease is caused by virus infection. There are three kinds of viruses that cause rose mosaic disease in China. They are Chinese rose mosaic virus, apple mosaic virus and Arabis mosaic virus. Rose mosaic virus is transmitted through the sap, and grafting and aphids are also transmitted. Therefore, when the diseased rose is used as scion, rootstock or cutting, the incidence is heavy. Control methods: 1. Select disease-free plants as propagation material; remove diseased plants and destroy them in time to reduce the sources of poisons. 2, heat treatment, virus-free, the disease strain at 38 degrees Celsius humidity, 4 weeks, detoxification effect is good. 3, spray pesticides to control insects in time. 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. Flowers Cattle Apple,Fresh Skin Thin Apple,Sweet And Juicy Fruit,No Wax Red Fuji Apple 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.