In natural conditions, kiwifruit is mainly pollinated by insects. Artificially assisted pollination is also one of the important agricultural measures in orchards with adequate labor resources and fine management. A lot of artificial pollination practice shows that the better the pollination, the more seeds of the fruit, the bigger the fruit, and the quality is also good. 1Necessity of artificial pollination Kiwifruit is a dioecious plant. Although male and female plants can produce pollen, the pollen of female plants is usually empty and has no viability. Only male plants can produce viable pollen. Therefore, pollen must be established between male and female plants. The number of seeds in the fruit of kiwifruit is related to the size of the fruit and the level of nutrients. Pollination produces 13 seeds to set fruit, but the resulting fruit is of poor quality. To produce high quality fruit, there should be at least 800 to 1,000 seeds per fruit. Therefore, artificial pollination must be performed. Although kiwifruit is a wind-blown flower, it can be pollinated by wind, but its pollen size is large, the distance of floating in the air is short, and the effect of pollination by wind is not good. It must rely on insect pollination or artificial pollination. Practice has proved that the necessary artificial assistant pollination is very effective. Artificially assisted pollination can effectively improve fruit yield and quality. After normal pollination and fertilization of female flowers, prevention of kiwifruit ulcer disease can prevent young fruit from falling off and deformed fruit, fruit enlargement is rapid, and the seed not only develops normally, but also has a significant increase in seed amount, an increase in single fruit weight, neat fruit shape, and soluble solid content. Improve, coloring is good; on the contrary, the fruit setting rate will be affected, even if it is fruitful, fruit, fruit shape, fruit color is difficult to guarantee. Practice has shown that artificially pollinated orchards gain 20% to 30% more weight than single fruit that has not been pollinated. Seed is increased by 40% to 50%, and the excellent fruit rate can be increased by 30%. Artificially assisted pollination can overcome the problem of poor flowering and poor pollination of kiwifruit. The male orchard in the same orchard generally opens 2 to 3 days earlier than the female flower. The kiwifruit has a particularly short flowering period. The long year can reach more than 1 week, and the short year only has 3 to 5 days. Once the pollination opportunity is missed, the harvest of the whole year will not be able to talk about it. Therefore, collecting pollen in advance and assisting in pollination are the best measures. In addition, artificially assisted pollination can effectively solve the problem of poor pollination caused by low temperature and rainy weather during the flowering period, and overcome the problem of incomplete pollination caused by airborne and insect-borne pollination due to the large and closely overlapping kiwifruit leaves. 2 artificial pollination method 2.1 Pollen Collection 2 to 3 days before pollination, the male plants that were earlier than the flowering period of the female tree variety, pollen amount, and the female plant variety, the pollen germination rate and the long flowering period were selected. For the male flower, remove the anther with a small forceps, a toothbrush, scissors, etc., and then take the following method: 1 Place the anther on the paper and place it at 25-28 °C for 20-24 h, so that the fruit of the flower blossoms in Shanxi SHANXIFRUITS 2013 (3) Disperse the pollen; 2 Place the anther on the tabletop, suspend 100 watts of light bulb above the 100 cm above the desktop, and remove the pollen when the anther is cracked; 3 The anther is covered with a layer of newspapers and then put in the sun to remove powder. It can also be used to remove powder on enthalpy at low temperatures. After the anther is cracked, the pollen is sieved out with a fine pestle, packed in a clean glass bottle, and stored at a low temperature and dry place for use. Pure pollen can be stored in sealed containers at -20 °C for 1 to 2 years, and can be stored in household refrigerators at 5 °C for more than 10 days. The percentage of fruit set in pollination stored under dry room temperature for 5 days can reach 100%. However, with the prolongation of storage time, the weight of fruit after pollination is gradually reduced. Pollen pollination with 24-48 h storage is the best. When collecting pollen, it is important to note that: 1 The best time to collect flowers is from 9:00 to 11:00 in sunny weather and from 17:00 to 19:00 in the afternoon. Do not pick moist flowers and they are heavy when it rains or rains. Dew flowers. 2 The collected flowers should be male flowers of kiwifruit. The collected flowers cannot contain female flowers, pedicels, sandstone, branches, leaves and other impurities. 3 If the main flower reaches the harvesting standard, please be careful not to pick the flower buds of the ear flower when picking the main flower. The pollen can also be produced after the ear flower matures. 4 Do not stack the flowers after harvesting. Store them in small amounts in air-permeable bags or cardboard trays in the shortest possible time, and avoid the sunlight. Store in a cool, dry place. 2.2 Pollen ratio In order to save the amount of pollen, pure pollen can be formulated with talc, starch, pine pollen and other fillers at a ratio of 1 to 5 to 10, and when used, the anther shell can also be used as a filler and mixed directly with the pollen and used directly. . 2.3 pollination methods Pollination is best pollinated on female styling heads that are open on the same day from 8:00 to 11:00 every day, with three consecutive grants. At least three stigmas of 1 flower were given pollen to significantly improve the fruit quality. The pollination could be carried out within 5 days after the opening of the female flower, but as the opening time prolonged, the number of seeds and fruit in the fruit after pollination and fertilization would gradually decline, and the pollination effect was best after 1 to 2 days after flower opening. The rate of fruit set in 4 days of pollination decreased significantly. The specific method is as follows. 2.3.1 Flower Pollination The male flowers that had just been opened on the morning of the day were collected. The petals were placed on a plate. The male flowers were directly facing the female flowers that had just been opened, and the stamens of the male flowers were gently applied on the female styla. Each male flower was given 7 to 8 female flowers. Male flowers can be collected before 10:00 am on sunny days, and male pollen can be scattered after 10:00. Male flowers can be collected and pollinated throughout the day in cloudy weather. Collecting male flowers that are later in the day can be lightly applied to the hands to check the amount of pollen. Pollination of flowers is slow, but pollination is the best of artificial pollination methods. 2.3.2 Bee pollination Kiwi flowers have no nectaries and are not attractive to honeybees. Therefore, the amount of bees required to pollinate the bees is larger. Generally, there should be 1 box of bees per 1334 m2 kiwifruit garden. Less than 30,000 vibrant bees. Generally, about 10% of the female flowers are moved into the park when they are open. If the bees are used prematurely, the bees will become accustomed to other nectar-plants outside the garden, and the number of kiwifruit pollen collections will be reduced. It should be noted that no plant with the same flowering period as kiwifruit can be left in the garden or near the orchard (Robinia pseudoacacia, persimmon flowering period is similar to kiwifruit) so as not to distract bees. In order to enhance the vigor of the bees, each bee is fed with 1 L of 50% sugar water every 2 days. The beehive should also be placed in a sunny place in the garden. 2.3.3 Scattering pollination The male anthers that were opened on the day were collected at 6:00-8:00 am and lightly sprinkled on female styling heads with chicken feathers or a brush between 9:00-11:00. 2.3.4 Pollination by simple pollinator The collected pollens are diluted 5 to 10 times with talcum powder, etc., and put into a plastic bottle. A snorkel is inserted in the cap to blow the pollen to the stigma. A small brush or pencil eraser can also be used to draw pollen and lightly applied to the stigma of the female flower. 2.3.4 Checking the supplement Females who have given powdered powder generally change their color from milky white to light yellow after 24 h, while the stigma of unpollinated flowers is milky white and needs to be recharged. It can be finished for 2 to 3 days. 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