Symptoms of the plants were obviously dwarfed, internodes shortened, slightly shaped, and there were obvious yellow and green mottled mosaics. Green mottles were limited by veins, some turned red, and old leaves performed more clearly. In the young leaf stage, the leaves become smaller, the leaves shrink, and the nicks are less than the healthy leaves. In the later period of the adult plants, there are symptoms of high temperature conditions that are trapped or have no symptoms, and sometimes the symptoms are re-obvious. The past few studies on cotton virus disease have attracted the attention of relevant departments.
Common bacterial virus called common mosaic virus and Tobacco streak virus called tobacco line virus.
Transmission routes and disease conditions Ordinary mosaic virus is transmitted by tobacco whitefly in the field, but the eggs are not poisonous, the seeds are not transmitted, the grafting can transmit the virus, and sometimes the virus can be transmitted through the juice. In the field, Bemisia tabaci feeds on poisonous weeds and spreads the virus to cotton plants, resulting in sporadic disease. As for the tobacco line virus, it is somewhat similar to the common mosaic virus, but the incidence rate is higher than the former, its mediator is not clear, and the incidence of grafting and transmission is fast.
Control methods used disease-resistant varieties.
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.
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.
Selenium-Rich Apple,Rich Selenium Apple,Fresh Apple,Fresh Sweet Apple
Ningxia hongxingda fruit industry , https://www.hxdfruit.com
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