Autumn is the peak period of fruit tree root growth, and it is also the key period for tree body to accumulate nutrients. Fertilizer can't keep up. At the moment, there are many ways to fertilize the big cherry in Yantai.
Speaking of the essentials of the autumn Shiji fertilizer, we must first highlight the word "early". It is usually carried out in September-October, but it is better to apply early in September. Because the soil temperature is relatively high during this time, the roots absorb fertilizer for a long time, and the absorption speed is also fast.
Grasp the time of fertilization and increase the amount of fertilizer applied. Agricultural technicians pointed out that 70% of the annual fertilization amount comes from the autumn application of the base fertilizer. It is advisable to apply more high-quality organic fertilizers, such as decomposed soybeans, bean cakes, chicken manure, pig manure, etc. The amount of organic fertilizer applied to the mu should reach more than 3,000 kg. If the source of organic fertilizer is insufficient, you can buy the finished organic fertilizer instead. Moreover, the nutritional supplements during the growth of large cherries should be balanced. Han Mingjian, director of the Fruit Tree Station of the Fushan District Agriculture Bureau, told the reporter, “The growth and results of large cherry not only require a lot of nutrients such as nitrogen, phosphorus and potassium, but also medium elements such as calcium, magnesium and sulfur, as well as trace elements such as boron, zinc and iron. Therefore, the autumn base fertilizer must be used in combination with large quantities, medium quantities and trace elements."
Mastering the time, type and amount of fertilization of the autumn fertilizer, it is not enough. Combined with the scientific fertilization method, it will have a multiplier effect. Han Mingjian, director of the Fruit Tree Station of the Fushan District Agriculture Bureau, said: "Autumn application of base fertilizer should be based on radial ditch. You can dig 6-8 radial grooves in the periphery of the canopy. The depth of the ditch is 20-30 cm. When digging trenches, try to be as much as possible. Some, this will help the roots absorb more nutrients. At the same time, it is necessary to mix the organic fertilizer with the soil as much as possible, and keep the soil in close contact with the fertilizer, so as to better exert the fertilizer effect."
In addition, the agricultural technicians also suggested that after the fertilization, the fruit farmers should step on the soil and water it in time, which is conducive to the combination of fertilizer and water and improve the utilization rate of fertilizer.
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