Precocious apple planting area is getting bigger and bigger, but the fruit is small and the color is not red, which directly affects the economic income of the farmers. The pollination and insemination of early-maturing apples and the application of top dressing are the main factors affecting the size and color of precocious apples. Taking early ripening apple halal fruits as an example, do not top-fat the spring before flowering and do not take frost-prevention measures. A slight late frost can cause the flower buds to freeze, and the flowers pollinate poorly. (Seed less) Mainly manifested as low fruit setting rate, which caused the first enlargement of the apple to be severely hindered (70-80% of the first enlargement to complete the whole fruit enlargement task). The late performance of the apple showed that the apple head was small and the color was not good. Judging from the regularity of fruit development, compared with late-maturing apple Fuji, the apple of early-middle-maturing varieties was early (mid-to-late July) and had a short duration (50-60 days). Therefore, fertilization is earlier than Fuji apple. In July, the demand for potash fertilizer by apples can account for 60-70% of the total amount of the year. At this time, potassium fertilizer is applied to the fruit, which is very beneficial to the later enlargement and coloring of the fruit. If you want an early-growth apple to grow big, fast on the color, and get well, it is recommended to take the following three measures: 1 spray up to 2116, Borexin. Can fight flowers strong frost resistance, guarantee pollination quality. The specific approach is: Cangla apple budding period, spend a week before the flower spray all day up to 2116, brassin, biogas slurry. 2 Early application of topdressing promotes swelling. Two months after flowering each fruit tree applied three elements of compound fertilizer 3-5 kg, "Rongchang" silicon calcium magnesium potassium fertilizer 2-3 kg. Then water it. 3 increase potassium fertilizer to promote color. In the first half of July, 1 kg of potassium sulfate from Red Bull produced in Germany was used. Then water it. In combination with spraying, spray the second instant potassium sulfate and ginsenoside 8000 times. Examination Nitrile Gloves,Nitrile Gloves,Powder Free Hand Gloves,Disposable Examination Nitrile Gloves Puyang Linshi Medical Supplies Co., Ltd. , https://www.linshihealths.com
Precocious Apple's Small Size, Difficult Coloring Causes and Countermeasures