Since spring this year, due to the high rainfall, low temperatures, and undulations, large areas of cotton seedlings have been infected with blight, root rot, anthrax, and other diseases. According to our experience, cotton wilt disease will follow and flooding will occur, which will inevitably cause a large number of dead plants in cotton fields. Therefore, cotton farmers must attach great importance to scientific prevention and control so as to avoid losses. Over the past few years, the Beijing Xingyuan Ecological Work Station has done a lot of exploration on the prevention of cotton diseases, especially withering and verticillium wilt, and developed a set of effective methods and achieved satisfactory results. The following suggestions are proposed:
1. Agronomic measures: timely cultivating, mulching, ridging
In the bud stage, timely cultivator shall be carried out to break the compaction, loosen the soil, improve the soil moisture, temperature and permeability of the cotton root, inhibit the proliferation of harmful bacteria, facilitate the development of the root system in depth, enhance the absorption of nutrients and disease resistance of the cotton plants, and coordinate nutrition. Growth and reproductive growth are effective in preventing premature aging. Notes for cultivators: High-yield fields with prosperous tendencies after rain or after watering should be properly deepened to prevent prosperous cultivation. For weak and weak cotton plants, shallow cultivator should be dominated by sorghum. In late June, timely removal of the mulch, ridging the soil to facilitate the roots under the bar, can play a role in drought prevention, flood control, lodging, prevent premature aging; earth should not be too late to open the ditch, so as not to cause excessive rooting, causing premature aging.
2, drug control: sterilization + nutrition
The occurrence of wilt is before and after budding of cotton, generally in mid-to-late June. Because wilt disease is fierce and heavy, and this year's rainfall is large, it is likely to cause widespread epidemic of wilt, so in June In the beginning of the year, the use of carbendazim, oxytocin, or Bixidan, etc., as a foliar spray, was applied at intervals of 5 to 7 days, and sprayed for 2 to 3 times, effectively preventing and controlling the occurrence of cotton wilt. When spraying fungicide, it is necessary to add hormone-free, full-nutrition biological foliar fertilizers, such as ecological sources or Kunyuan 588, and it is strictly forbidden to use hormone stimulating seedlings. This is tantamount to detoxification and growth, which is counterproductive.
The specific formula is (15 kg of water per barrel):
Formula one: Kunyuan 588 or ecological source 40 ml + 40 ml oxygen + streptomycin 4 ~ 5 grams of agriculture
Formula two: Kunyuan 588 or ecological source 40 ml + Bi Xidan 20 grams
Application method: Spray evenly on both sides of the blade before 9 o'clock in the morning or after 5 o'clock in the afternoon. It can effectively control the diseases of cotton fields, cultivate strong seedlings on disease-free plots, improve immunity, and effectively prevent the occurrence of premature senescence and brown wilt.
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.
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