Artificial pollination increased fruit pear guarantee!

Artificial pollination is a cross pollinated fruit pear. Is varieties of pollination, fruit setting rate is very low. If the orchard planted without pollination varieties, quantity or pollination varieties, or pollination varieties selected properly, the main varieties of flowering and flowering time or overlapping time is short, or the main cultivars and pollination varieties of flowering trees, flowering or rainy, effects of pollination in normal. In these circumstances, if the artificial pollination could significantly increase the fruit setting rate, under adverse conditions, won good yield. The pollen grains on the stigma, although only 10 grains fertilized into the ovary. However, in style but did not reach the ovary hormone pollen grains produced by stimulation of fruit cell division. Therefore, fall more pollen grains on the stigma in the possibility, the greater the fruit grown fruit. The results show that a flower 5 stigma fall 300 pollen grains, fruit cell division, fruit large. With the decrease of pollen grains, fruit also reduced accordingly. Pollination and fertilization not only affect fruit size, but also increase the number of fruit. With the development of market economy, it is necessary to apply artificial pollination as a conventional technology.

(1) the time of pollination in the period of pollination was 5-7 days. According to the survey, the pollination as soon as possible. Flowering fourth days after pollination by fruit dysplasia, small fruit, 5 days after pollination and fruit setting rate decreased significantly. Pear pollen in 15 ~ 17 DEG C under the conditions of about 50% hours of germination, about 2 to 3 hours of germination of a 90% ~ 80% hours later, almost all of the stigma can be invaded after 3 hours. This shows that in normal temperature, rain 3 hours after pollination, it has little effect on the fruit. From 8 a.m. to 6 p.m.. High temperature at noon, pollen germination, the effect is better.
(2) pollen collection and processing of pollen collected from different species of trees. Mixed pollen available in several varieties. The best picking bud bud in early puberty, pollen quality too tender is not good. The flower bud on the back, get rid of the pink anthers as soon as the focus spread, on paper to dry, yellow pollen from the anthers scattered out. Such as the need to put pollen, pollen drying at 20-25 deg. the constant temperature box, can also be a 15 watt bulb placed box heating, drying the pollen, accelerate the dehiscence of anther, pollen shed. Note that the temperature should not exceed 25C, the temperature is too high pollen germination. If more than 30C, pollen germination rate will decline. Therefore, the use of the time to master the temperature of the pollen to change the situation. Pollen drying up, focus back on the bottle. The pollen life is not long, under the condition of 50% humidity in the greenhouse, the germination rate of pollen is only about 57.6% after the first 10 days, and only on the day of 33.9%. Pollen germination rate will be reduced quickly. The amount of pollen in pollination each flower needs very little, in order to save the pollen in pollination in pear pollen add filler, such as pine pollen, milk powder, lotus root starch etc.. The amount of dilution for pollen was 10 ~ 20 times, we must together.
(3) pollination method can dilute the pollen packed in gauze bag and then tied in the head, knocking gently with a wooden pole, the pollen removed in the flower's stigma, using this method, 1 hectares of the full fruit period about 750 grams of pear pollen. Pollen can also be mixed with 15% sucrose solution, and then sprayed on the stigma of the flower. Using this method, 1 hectares of pear 1200-1500 grams of pollen. You can also use a pen or pencil eraser dipped in pollen flowers. To pear flowers without artificial pollination, each flower or inflorescence are granted to each, just give a good location, normal flower inflorescence 1-2 on flower pollination on the line. When pollination, it is only necessary to gently rub the pollination on the stigma of the flower, so that it will affect the normal fertilization.
A complete solution to the improper or inadequate pollination of orchards is a high degree of pollination. In order to respond to the need for artificial pollination, of course, the workload is relatively large. In order to be simple, cut off the pollination varieties of flowers, inserted in the water bottle, hanging in the upper to pear pollination, a tree to hang 4 ~ 5 bottles. This method is simple, but the effect is not good. In addition to the above methods, but also can bee pollination. Suitable for pollination tree accounted for more than 20% yuan, and more uniform Liyuan configuration. The hive is placed in the park before flowering 2-3 days, 2 hectares 3 box is suitable.

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