How to manage the pear tree
First, the sparse flower 1. Inflorescences. The florescence should be carried out after the inflorescence is exposed. It should be done sooner rather than later, before the flower ball. Remove the head inflorescence, buds and weak flower inflorescence first, and then leave an inflorescence every 25-35 cm according to the amount of fruit left in each variety. Large fruits stay thin, and medium fruit fits slightly. In principle, to retain the inflorescence, weakening the inflorescence, leaving the results of the branches slanting back inflorescence, sparsely back, back inflorescence, leaving the inflorescence less likely to occur branch scan leaf position, thinning branches and inflorescence too close to the stem. 2. Sparse flowers. After the inflorescences are separated, the flowers must be sparsely removed. To clear most of the central flowers, spend 2-3 flowers per inflorescence. It is best to complete before the first flowers, and at the latest when the flower is full. Second, pollination Collect flowers. It is best to collect flowers from varieties with large pollen and flowering earlier, and collect multiple varieties of flowers. Botou area is generally collected from crisp pears, autumn pears, pears, and yellow crown pears. The buds of large balloons and early flowering stages have high flour yields. Take anthers. After collecting the flowers, remove the anthers in a timely manner with a sieve and spread them in the shade. Do not stack for a long time. Pollen production and preservation. Set up in a more enclosed room. Indoor use of electric furnace or coal furnace to maintain the temperature at 25 °C -28 °C, the maximum does not exceed 30 °C. Coal stoves must be equipped with chimneys to prevent pollen from being smoked. Spread a layer of newspapers on the stage, will use the anthocyanins without impurities, thin and spread on the stage, and turn in time, usually a day and night pollen can be dispersed, and then use a fine sieve to remove pollen. The screened anther shell continues to stand on stage until the pollen is completely dispersed and pollen is taken again. Pollen should be kept in a dry, tight, low temperature condition. For short-term storage, the pollen can be dried and sealed in a refrigerator or in a cool place. For long-term storage, dry, sealed pollen should be stored at a low temperature of -20°C to 0°C. Artificially taught. The pollen is mixed with 2-5 times of neutral talc powder or fine starch, and the amount of pollen is mixed with large or small amount of additives. The small amount of pollen should be mixed with additives. When the time is given, the pollen is put into a vial, and the pollinator is made of a writing brush, a newspaper paper basket, a cotton swab, a cigarette filter, etc., and after pollen extraction, one of 2-3 flowers of each inflorescence is awarded, and the pollen can be clicked. Grant 20-30 flowers. From the beginning of the flowering period to the flowering period of 2-3 days, it will be granted once a day. The pollen that cannot be used on that day should be stored at a low temperature. Pollination works best from 10am to 4pm. Rabies vaccine is an active immunizing agent used to prevent infection caused by the rabies virus. The vaccine works by causing your body to produce its own protection (antibodies) against the rabies virus. Rabies Vaccine Injection,Rabies Antibody,Anti Rabies Dosage,Human Rabies Antibody Changchun Zhuoyi Biological Co., Ltd , https://www.zhuoyi-bio.com