1. Improve soil organic matter content
Soil organic matter can promote the formation of soil aggregate structure, increase soil permeability, and improve soil water retention capacity and cushioning performance. Measures to increase the organic matter of the orchard include orchard covering, planting green manure, returning the fruit trees to the roots, and applying organic fertilizer.
2. Balanced fertilization
There is a mutual help and antagonism between the nutrients, and a certain proportion should be maintained when fertilizing. When the necessary mineral nutrients in the soil are lacking, the apple tree cannot grow normally; when it is too much, it is not conducive to the growth and development of the apple tree. When there are too many trace elements, the apple tree will be poisoned.
3. Timely topdressing, a small number of times
Apple trees grow three times in a year: the first time from early April to early May; the second time mostly occurs from early June to mid-July; the third is after mid-September, the duration is longer. Long, can be extended to mid-late November. The topdressing period should be carried out at these three growth peaks.
4. Scientific fertilization
When the fertilizer is applied, the organic fertilizer and the soil are backfilled in the compartment, and the soluble fertilizer can be applied through the drip irrigation system in the orchard. Urea, borax, zinc sulfate, amino acid calcium, etc. can be sprayed on the foliar surface, and the foliar application time is preferably carried out before 9 o'clock and after 16 o'clock on a cloudy or sunny day.
5. Moderate watering
Fertilizers can only be absorbed by apple tree roots when dissolved in water, but excess water in the soil will not only anaerobic roots, but also leaching of fertilizer. After fertilization, it should be irrigated according to the soil water content.
6. Do not be superstitious fruit tree fertilizer
The special fertilizer for fruit trees is not a general fertilizer for all kinds of fruit trees, nor is it suitable for all areas, but it is relatively suitable for a certain age of a tree species in a certain region.
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