First, the application time of nitrogen fertilizer
The average producer believes that "the application of nitrogen fertilizer in the spring can be effective for the flowering of the year." This view is wrong.
Nitrogen is generally in the form of nitrate nitrogen and ammonium nitrogen. After the fruit trees are absorbed and utilized, the two available nitrogens are converted into nitrate nitrogen, which is then converted into nitrogen dioxide, which is combined with carbohydrates to form amino acids. In the tree body. The timing of this conversion process, although not yet clear, certainly takes a long time, not in a short time (fast-acting). Therefore, the application of nitrogen fertilizer in spring is not effective for flowering results and flower bud differentiation in the current year.
Scientific point of view: Nitrogen fertilizer is best applied in autumn, that is, before the leaves of the fruit trees are applied. Tianshengjin peptide amino acid contains high nitrogen nutrition, no absorption and conversion, can be directly used by plants, supplement plant nutrition, is the first choice for rapid remediation after crop disaster. In addition, its molecular weight is small (75 ~ 204), strong penetration, is the best choice for fruit trees to dry and top dressing.
Second, the depth of fertilization
The average producer believes that "the fertilizer should be applied in depth to prevent loss." This view is wrong.
After fertilizing the fruit trees, many mineral elements dissolved in water, such as calcium and potassium, are easy to leak with irrigation, and once water is poured into the deep layer of the soil to a certain depth. The more the irrigation times, the more the leakage is. . The traditional fertilization depth is generally 40~50cm. After fertilization, the leakage is serious with the increase of irrigation times, and the fertilizer utilization rate is extremely low.
Scientific point of view: Whether applying base fertilizer or topdressing, the role of shallow roots should be considered, and the depth of fertilization should be between 10 and 20 cm below the surface.
Third, the depth of cultivating
The average producer believes that "the cultivating should be deeper to increase the effect of moisturizing and suppress weeds." This view is wrong.
Japanese fruit tree expert Yu Ikun believes that "the deep roots of fruit trees act as fixed trees, which determine the role of growth; shallow roots play a role in determining flower bud differentiation and fruit quality." In order to promote flower bud differentiation and improve fruit quality, it is necessary to protect the root system of 10-20 cm under the fruit tree.
Scientific point of view: When cutting the hoe in the orchard, you only need to cut through the skin's epidermis and cut off the capillary of the soil.
Japan's grass-making orchards have not been ploughed or ploughed for many years, and the organic matter content is about 2% to 3%, which is abundant in years.
Fourth, the way of irrigation
Generally, producers generally use flood irrigation. This method is wrong.
After flooding with large water, some of the roots of pear trees in the shallow soil will be deprived of oxygen, causing death and tying the soil.
Scientific point of view: Advocating the use of drip irrigation or infiltration irrigation is not only conducive to tree development, but also saves water, saves labor, saves time, and reduces disease occurrence.
This article URL: Several common fertilization misunderstandings! How to apply fertilizer to maximize fertilizer efficiency
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