Flowering wells should not be used during flowering. The flowering period of fruit trees coincides with the gradual recovery of low temperature, and the roots of fruit trees have entered a normal state of growth. At this time, if water is poured on the fruit trees, because the groundwater temperature is lower than the temperature of the ground, the roots are stimulated by the outside and the supply of nutrients in the tree is disturbed. Physiological dysfunction can easily cause the consequences of unpollinated flowers and fruitless fruits. Ground temperature directly affects the growth and development of fruit trees. Therefore, fruit trees should not be used for irrigation of well water at full flowering stage. If it is indeed a drought, it can be watered with river or pond water. Flowering inorganic nitrogen fertilizer should not be applied. The nitrogen consumed during fruit flowering is the storage nutrient in the autumn of last year. It is absorbed and synthesized by the root system and exists in the organic state in the tree body. It can be used for flowering and fruit setting in the spring of the following year. Inorganic nitrogen fertilizer is not easy to use directly for flower organs of fruit trees. Therefore, organic nitrogen fertilizer should be sprayed on fruit trees during flowering period, and amino acid liquid fertilizer is the first choice. Urea is also a good organic nitrogen fertilizer. However, the spraying of urea during flowering must use good quality, and the inferior urea contains diurea, which will cause new leaves and floral organs to be injured, so it should not be used. Inorganic nitrogen fertilizers such as ammonium chloride and ammonium sulfate are not used as much as possible. Some organic nitrogen-containing substances, such as chicken, rabbit leech leachate or blood of livestock and poultry, can also be used for spraying during flowering.
Face Mask,3 Ply Face Mask,Antiviral Face Mask,Surgical Mouth Mask
Ningbo Carest Medical Instrument Co.,ltd , https://www.carestmed.com