Unsuitable for irrigation water during flowering
The flowering period of the fruit tree is gradually rising, and the root system of the fruit tree has entered the normal growth state. At this time, if the well water is poured into the fruit tree, the root system is subjected to external stimulation because the groundwater temperature is lower than the temperature of the upper layer, causing the nutrient supply in the tree to be disordered. Physiological dysfunction, it is easy to cause unpollinated flowers and fruitless results. The ground temperature directly affects the growth and development of fruit trees. Therefore, the fruit trees should not be filled with well water during the flowering period. If it is really dry, it can be watered by river water or pond water.
Spraying pesticides during flowering
During the flowering period of the fruit tree, a large number of pollinators and bees are busy between the flowers. At this time, the stigma of the flower produces a mucus, which is conducive to the adhesion of the pollen. If the pesticide is sprayed during the flowering period, a large number of pollinators and bees will be killed while killing the pests, and the important pollination channels will be cut off. In addition, the mucus on the flower stigma will be diluted to reduce the possibility of pollen sticking.
It is not appropriate to spray inorganic nitrogen fertilizer during flowering
The nitrogen consumed in the flowering period of the fruit tree is the storage nutrient of the Autumn of the previous year. It is synthesized by the root system and is present in the tree in an organic state. It is used for flowering and fruit setting in the Spring of the next year. Inorganic nitrogen fertilizer is not easy to be directly used for fruit tree flower organs. Therefore, the organic nitrogen fertilizer should be sprayed during the flowering period of fruit trees, and amino acid liquid fertilizer is the first choice. Urea is also a good organic nitrogen fertilizer. However, the urea sprayed during the flowering period must be of good quality. The inferior urea contains diuret, which will cause the newborn young leaves and flower organs to be injured, so it should not be used.
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