What is foliar fertilizer? The method of spraying fertilizer solution to obtain the nutrient elements of plants through leaves, called foliar fertilization, for the purpose of foliar absorption, the fertilizer needed to directly apply the nutrients of the crop to the foliar fertilizer is called Foliar fertilizer. Foliar fertilization allows nutrients to enter the body directly from the leaves, participating in the metabolism of the crops and the synthesis of organic matter, and thus is more rapid and effective than soil fertilization. Therefore, it is often used as an effective measure to treat crop deficiency in a timely manner.
In the fertilization, it can also be applied in stages according to the growth period of the crops and the actual condition of the seedlings and soil fertilization, so as to fully exert the characteristics of rapid foliar fertilizer response, so as to ensure the normal growth and development of the crop under suitable fertilizer and water conditions. To achieve the goal of high yield and quality.
Why do you want to foliar spray?
1. Insufficient root fertilization When the roots are inferior to the crop, such as in the late stage of crop growth, the root activity declines and the ability to absorb fertilizer decreases; or when the soil environment is unfavorable to crop growth, such as excessive water, drought, soil peracid Over-alkali causes crop roots to be absorbed, and crops need to recover quickly. If the root application method can not meet the crop needs in time, only foliar application can be used to quickly supplement nutrients and meet the needs of crop growth and development.
2, rapid supplementation of nutrients in the process of crop growth, crops have shown some nutrient deficiencies, due to the use of soil fertilization requires a certain amount of nutrients in order to be absorbed by the crops, can not timely alleviate the symptoms of crop defects. At this time, using foliar fertilization, nutrients can quickly enter the plant through the leaves, solving the problem of deficiency.
3, give full play to the fertilizer effect Some fertilizers such as phosphorus, iron, manganese, copper, zinc fertilizer, etc., if rooted, easy to be fixed by the soil, affecting the application effect, and the use of foliar spray will not be limited by soil conditions. For example, some fruit trees and other deep root crops absorb less nutrients. If traditional fertilization methods are difficult to apply to the root absorption site, they can not fully exert their fertilizer efficiency, while foliar spray can achieve better results. effect.
4, economical and economical various trace elements are essential nutrients in the growth and development of crops, but the application rate is very small, such as molybdenum fertilizer, the application rate per acre is only a few tens of grams, if the root application method is not easy to apply. Only by foliar application can it be cost effective. According to research estimates, the general crop sprays boron fertilizer on the foliar surface, and the utilization rate of boron is 8.18 times that of the base application. From the perspective of economic efficiency, foliar application is more cost-effective than roots.
5. Reducing pollution to the soil A large amount of nitrogen fertilizer is applied to the soil, which easily causes the accumulation of nitrate in groundwater and vegetables, which is harmful to human health. About 75% of the nitrates absorbed by humans come from vegetables. If foliar fertilization is adopted, appropriately reducing the amount of soil fertilization can reduce the nitrate content in plants and residual mineral nitrogen in the soil.
In salinized soil, soil fertilization may increase the concentration of soil solution and increase the salinization of the soil. The use of foliar fertilization measures not only saves the amount of fertilization, but also reduces the pollution of soil and water sources. It is an effective fertilization technique with two advantages.
Foliar fertilizer is also what we call extra-fertilization. It is an important measure in agricultural production. Today, China Chemical Fertilizer Network Xiaobian will analyze the advantages and application methods of leaf foliar fertilizer, as follows:
What are the advantages of foliar spray?
1 less dosage, more economical. In the application of soil micro-fertilizer, if the application amount of base fertilizer is relatively large, the effect is not satisfactory. Generally, 0.5-2.0 kg per mu is needed, and the foliar spray concentration is relatively rare, which is economical (leaf-spraying once or twice, The eggplant fruit is used once every 10 days, and the dosage is one-fifth of the soil application), which is beneficial to crop absorption.
2 Avoid applying soil to fix it or be absorbed by soil and not be absorbed by crops. Foliar application of micro-fertilizer, nutrients can enter from the stratum corneum and stomata of the leaves, without direct contact with the soil, thus avoiding soil fixation and reducing effectiveness.
3 nutrient absorption is fast and efficient. The leaf surface is sprayed with micro-fertilizer, which can directly contact the stems and leaves, and absorb and transport quickly.
4 easy to control the concentration. The leaf surface is sprayed with micro-fertilizer, the concentration is easy to control, no poisoning will occur, and it is safer.
5 reduce pollution. Foliar spray micro-fertilizer has a low concentration, generally diluted 0.1%-0.3%, with less dosage and will not pollute the environment.
How to improve the application effect of spraying foliar fertilizer?
It is necessary to select suitable foliar fertilizers, such as the series of foliar fertilizers produced by Luhong Agricultural Science. According to the types of crops and different stages of crop growth, it can be sprayed back on the seedling stage or leafy vegetables, and planted in the flowering Spray calcium galore before or during the young fruit period, and spray the fruit king when the young fruit begins to expand after the fruit is placed, and spray it into the golden carat when it grows vigorously or turns sugar.
These foliar fertilizers contain no hormones, but contain medium and trace elements and multifunctional factors (vitamin B compounds), which can promote balanced crop growth and improve stress resistance. 10-12 days/time interval, can effectively not supplement the trace elements, improve quality, increase disease resistance, delay aging, increase yield.
Many farmers think that the more fertilizers they like to apply during the spraying of crops or vegetables, the better the application of foliar fertilizer or other fertilizers is better. In fact, this is not the case, as long as the method is reasonable. It can also promote the demand for crop growth.
For example, fertile fertilizers such as ammonia, ammonium bicarbonate, etc., if foliar fertilizer is applied, high temperature will cause damage to crops after spraying, and burn the leaves, saying that it is not possible to apply foliar fertilizer. Moreover, many micro-fertilizers cannot be mixed with pesticides. Acidic fertilizers and alkaline fertilizers should be used in combination. Fertilizer-fertilizer and fertilizer-drug mixed application should be carried out in a targeted manner to play the role of “one-time spray fertilizer and multiple effectsâ€. Otherwise, it will be counterproductive.
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Hydroponics is a subset of hydroculture, the method of growing plants without soil, using mineral nutrient solutions in a water solvent. Terrestrial plants may be grown with only their roots exposed to the mineral solution, or the roots may be supported by an inert medium, such as perlite or gravel. The nutrients in hydroponics can come from an array of different sources; these can include but are not limited to waste from fish waste, duck manure, or normal nutrients.
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