Misunderstandings of fertilizing apple trees in spring
Emphasis is placed on chemical fertilizers. In the spring apple production, the majority of fruit farmers applied a large amount of chemical fertilizers to the fruit trees, neglecting the use of potash fertilizer and organic fertilizer, resulting in excessive waste of nitrogen fertilizer, a large amount of phosphorus deposition, and serious soil compaction, resulting in unbalanced growth and development of fruit trees, and out of control in the prevention and control of diseases and insect pests, resulting in apples. The yield has not risen, the quality has declined, and the fruit produced has changed its flavor. The application of basal fertilizer and top dressing is inappropriate. Apple trees need different nutrients in different growth periods. As far as the fruit area of ​​the Weibei dry plateau is concerned, autumn rains are more and the moisture content is good. Base fertilizer can be applied in furrows before and after apple harvest. The effect of base fertilizer and top dressing in the spring of the second year is not as good as in autumn. The temperature of applying basal fertilizer in spring is relatively high, the soil moisture is not good, and the tree is difficult to absorb without prolonged fermentation, which causes waste to a certain extent. Premature top dressing is easy to lose nutrients, and the timely effect is best. Rely on foliar fertilizer. Some fruit growers rely too much on foliar fertilizer and do not apply fertilizer at all in spring, which is not appropriate. In fact, more than 90% of the nutrients of plants come from the soil, and what the leaves absorb is the supplement of trace elements. I don't know how to mix fertilizers. After the beginning of the spring, some fruit farmers mix the unripe human dung, chicken dung, cow dung, etc., with alkaline fertilizers such as plant ash, calcium, magnesium, and phosphate fertilizer. However, immature farmyard manure cannot be directly applied to the field, which is prone to insects and pollutes the environment. Disclaimer: Some articles on this website are transferred from the Internet. If the legal rights of a third party are involved, please inform this website for processing. phone Glucoside Powder also known as glycosides or glycosides, are cyclic acetal derivatives formed by dehydrating the semi-acetal hydroxyl group of a sugar or a sugar derivative (such as a glucuronic acid) with the hydroxyl group in another non-sugar substance by an acetal bond (ligand bond). Ligands can be divided into the following categories: Spirulina Powder,Green Tea Extract Powder,Jujube Seed Extract Powder Shaanxi Changsheng Industrial Co., Ltd. , https://www.sxcsmalehealth.com
According to the structure of the ligands, the structure of the ligands can be phenols, anthraquinones, flavonoids and other compounds. For example, flavone and anthraquinone ligands, etc.
According to the solubility of the ligands: the ligands can be divided into water soluble and fat soluble ligands. Water-soluble ligands are usually soluble in polar solvents such as water and ethanol, while fat-soluble ligands are less soluble in water and more soluble in organic solvents.
According to the form of existence of the ligands, the ligands can be divided into primary and secondary ligands. Primary ligands are those that contain several sugar molecules originally existing in plants, while secondary ligands are those that produce fewer sugar molecules after hydrolysis of primary ligands.
According to the function of ligands: ligands can be divided into physiologically active ligands and inactive ligands. The ligands with physiological activity, such as saponins and flavonoid sides, have certain physiological functions in plants, such as anti-oxidation, anti-inflammation, anti-tumor, etc.