The fertilization period is the best period in March.
Fertilizer types of fertilizers and formula fertilizers are mainly high-nitrogen, phosphorus and low-potassium formula fertilizers, that is, the nitrogen, phosphorus and potassium contents are: 25-10-5, 30-5-5 and other formula fertilizers. In addition, farmers purchase urea and diammonium phosphate in a certain proportion. Organic fertilizer: mainly commercial organic fertilizer or bio-organic fertilizer.
Fertilizer application amount Sheng Orchard: that is, 8 to 12 years of orchard, each tree is applied (mixed fertilizer according to the above ratio) 3 to 4 kg, and fruit trees of 13 years or more are applied 4 to 5 kg per tree. First hanging orchard: 5 to 7 years old tree, each tree is applied (mixed fertilizer according to the above ratio) 2 to 3 kg. Each of the 4 year old trees is applied (15% of the fertilizer mixed in the above ratio). Saplings: Newly planted young trees are applied with 0.2 kg of diammonium phosphate + 1 kg of organic fertilizer per tree, and may not be applied with budding fertilizer.
The application method is outside the two-thirds of the canopy, that is, the fruit orchard is 60 to 100 cm away from the main pole of the tree, and the soil can be covered with a hole or a radial groove.
Post-fertilization management According to the recent monitoring of soil moisture in the county's Meixian Agricultural Technology Center, the soil surface water content of the county is 60%-65%, and the relative soil water content is 61%-67%. It can be irrigated immediately after applying sprouting fertilizer before March 25, and the irrigation amount per mu does not exceed 40 square meters. Fertilize after March 25, without irrigation, so as not to affect the normal germination of kiwi fruit.
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