How to improve the fruit setting rate of walnuts

Flower and fruit management artificially assisted pollination: Artificially assisted pollination can improve the fruit setting rate of walnut by 10% to 30%. When the stigma of the female stigma is cracked and the shape of the stigma is inverted, when the stigma secretes a large amount of mucus, artificial assistant pollination is performed at 9 to 10 am, and the effect is ideal. Eliminating male flowers: The development of male and female flowers will consume a large amount of nutrients and moisture stored in the tree. Especially when the male inflorescence grows rapidly and the female flower is largely opened, the water in the tree body will become a limiting factor for the growth and development of female flowers. Excessive removal of male flowers can reduce nutrient and water consumption in the tree body, allowing more nutrients and water supply for female flower development and flowering and fruit setting, thereby increasing yield and quality, and facilitating new shoot growth and tree vigor. It is advisable to eliminate the male flower as early as possible, the earlier the effect of increasing production is more obvious. The removal effect of male flower buds from dormancy to enlargement was better, and the male inflorescence was obviously elongated and sparse. The number of male flowers to be eliminated should be determined based on the number of male flower buds and the ratio of mixed buds to female flower buds. It is advisable to use a ratio of 30:1 to 60:1 male and female flowers after removing male flowers. For plants with more mixed shoots and fewer or fewer male flower buds, less sparse or not male flowers should be used. To eliminate the male flowers: combine the pruning hooks with wooden poles and pull the branches off to remove the male flowers by hand.

If the walnut tree is too prosperous and it is not easy to set fruit, the following two measures may be taken: one is to use a blade for vertical skinning on the main trunk of Wangshu in June, and the main stem has a diameter of 5 cm and two vertical lanes. The trunk diameter is more than 5 cm. If appropriate, the skinning site should be more than 30 cm above the ground in order to avoid splashing dirt after the rain contaminates the wound, but it is not possible to cut the ring; the second is to spray 200 to 300 times paclobutrazol every 10 days from the end of June to the beginning of July. Liquid, even spray 2 to 3 times.

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Reference images as below:

Neck & Shoulder Heating Pad

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