Fertilizer management If it is dry in the growing season, irrigation is required. Organic fertilizers are applied after the harvest in autumn, and some chemical fertilizers can be applied during the growth period. 2-7 years old saplings, equivalent to 500-665 grams of nitrogen per plant, phosphorus 135-200 grams, 265-335 grams of potassium, can be applied in two phases. According to studies, the normal leaves of kiwifruit contain 3.12% nitrogen, 0.20% phosphorus, and 2.76% potassium. This indicator can be used as a reference for fertilization. When fertilizing, care must be taken to prevent the presence of chloride ions. If 700 mg/kg of chloride ions accumulate around the kiwifruit, the plants will suffer. In the soil, when the content of chlorine reaches 1.12-1.60%, the blades are in the form of fire and even die. Pollination pollen of the female cultivars of Chinese kiwifruit is degraded. Therefore, it is necessary to plant male cultivars with similar flowering ages as pollination trees and put pollination of bees to increase yield. In order to make the flowering period of the male plant close to the female plant, in order to make the pollination of the late flowering variety good, on the one hand, the male forest of late flowering is selected at the fixed value, and on the other hand, the late flowering female plant can also be grafted on the late flowering female plant. Or buds, in addition, pruning methods can also be used to make the left buds germinate late and bloom late, such as the grape using the topping method, to open the flower twice or three times a year, so as to obtain different flowering stages, to give the late flower females. Variety pollination. By adopting the above methods, the proportion of male plants in kiwifruit orchards can be reduced, and yield per unit area can be increased. Since there is no reliable method for identifying female and male plants before the kiwifruit saplings begin to flower, special attention should be paid to avoid mixing female and male plants at the time of setting. If there is a large proportion of male plants in an orchard, they can be converted to a part of female plants in proportion and at a suitable distance. When raising the seedlings, care should also be taken not to mix the female and male plants, but to separate and plant them.
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