Fertilizer for fruits

Fruit growth and development need to absorb a variety of nutrients, in addition to a large number of elements; the trace elements are also important, if the lack of the susceptible element deficiencies. Meanwhile, there are still among the various elements helped or antagonism in the soil. For crop nitrogen increased, while the absorption of magnesium is also high; the other hand when the nitrogen content is low, reducing the absorption of magnesium. And nitrogen and potassium, boron, copper, zinc, phosphorus and other elements are antagonism between them, such as the excessive application of nitrogen fertilization, instead of the corresponding application of the above-mentioned elements, the potassium, boron, copper, zinc, phosphorus and other elements contents on a corresponding reduction. On the contrary, a small amount of nitrogen applied on the crop, the potassium content of leaves will be increased. Therefore, less nitrogen content in soil will help potassium absorption by the crop. In general, the excessive fertilizer application, if not a corresponding increase in potassium and magnesium, the inhibition of potassium, magnesium absorbed, potassium and magnesium deficiencies. But too much potassium, calcium, magnesium absorption is reduced; the contrary, the low amount of potassium in the crop can increase the calcium and magnesium content. When calcium is not conducive to ammonia ion absorption too, will cause slightly alkaline soil. So that iron, manganese, zinc, boron becomes insoluble, leading to the occurrence of deficiency disease. However, in actual production, some farmers do not pay attention or do not understand the balancing effect of fertilizer, often in the fertilizer to nitrogen, phosphorus-based, others use fewer elements, resulting in deficiency disease incidence, yield is not high, decrease the quality. To change this situation, we must understand the soil type, soil nutrients of abundance and shortage, fruit trees of different nutrient needs, are best carried out soil testing and fertilizer, fruit trees in order to avoid the occurrence of deficiency disease.
　　

Apple trees and apple trees during the fertilizer demand growth is closely related to the rhythm. Agricultural fertilizer and some apple to apple needs is not the premise, but rather to capital, labor and other human factors determine the fertilization period, and thus reach the desired goal of fertilization, and sometimes counterproductive damage. In recent years, many apple will fall over base manure applied in spring, breaking the tree "clock." Decomposition due to nutrient conversion was not timely supply of tree root absorbing peak of the spring need to use fertilizer, but delayed until late summer early fall, fertilizer was able to give full play to the spring of smart growth can not be stopped in time, even in a long spur soon after stopping second initiation, directly affect the accumulation of organic nutrients and flower bud formation; also prompted vigorous growth of the tree fall tree, reducing the accumulation of tree nutrition, affecting apple seedling growth, lower quality and hardness, meaning lost fertilization.
　　

Basal application of the time most of the wafer is applied after harvest in apple basal, base manure missed the autumn the best time. At this time temperature drop, root activity tends to stop, fertilizer use efficiency greatly reduced, the relative increase in production costs. After the base manure fertilizer in spring and leaves, fertilizer play slow, fruit and flowering trees in spring shoot growth is less important, is not conducive to flower bud differentiation, is more scientific.
　　

One does not grasp the depth of fertilizer application. Fertilizer too shallow, causing a waste of nutrients essential; organic fertilizer too deep (80 cm up and down), no facilities concentrated in the root level, is not conducive to root absorption, reduced fertilizer use efficiency.
　　

Second, fertilization or too few points to mix with the soil, fertilizer is too concentrated, resulting in high local concentrations of soil, often easy to produce fertilizer damage, especially due to poor mobility phosphate, fertilizer is not conducive to play.
　　

Many farmers in the production of more emphasis on fertilization, but often overlooked work watering, although a lot of fertilizer, but drought not to maximize fertilizer efficiency, and thus the yield and quality of fruits great extent. Therefore, irrigation should be performed after fertilization, when the performance of dry soil phenomena should also be timely watering. Dry areas, can be Orchard straw mulch, can maintain soil moisture, but also increase soil organic matter content.
　　

Spraying can be absorbed directly by leaves, is an efficient and fast method of fertilization, it is widely used in the majority of growers. However, some farmers in the course of spraying, there were some irregularities: first, poor choice of fertilizer types, such as spraying with ammonium bicarbonate, resulting in burning leaf; second spraying position inaccurate; Third, the concentration of control allowed , or high or low. The correct way: First, spray fertilizer under the trees need to choose the type of nitrogen in urea in the most widely used and is better. Second, determine the optimum spraying site. Different nutrients in different tree mobility, nitrogen, phosphorus and potassium are highly mobile elements, followed by sulfur and chlorine. Difficult to move iron, manganese, zinc, molybdenum, copper, hardly moving as boron, magnesium, calcium. Spraying should therefore be different parts, especially the trace element mobility in vivo difference in the tree, preferably in need of organs directly sprayed on. In addition, the suction surface absorbed faster than the leaves, spraying fertilizer spraying when we should focus on suction surface. Third, determine a reasonable concentration of spray fertilizer. Must be based on different growth stages and climatic conditions and the concentration of different species. Should lower the concentration of young leaves, mature leaves should high; rainfall over the region and the high season can be more appropriate, should lower the contrary. In addition, spray volume should be enough to wet leaves, dripping did not drop as significantly, while leaf spray concentration is generally low, with less fat content, in order to enhance the effect of spraying fertilizer, preferably a continuous spray 2 to 3 times more interval of 10 to 15 days.
　　

On fruit trees, the trace elements requirements of only a few parts per million, but in some soils when the lack of certain trace elements, or some fruit trees are particularly sensitive for certain trace elements, only the appropriate application of this element, Yield and Quality to achieve the purpose. Of Soil by the National Academy of Sciences of soil zinc, boron, manganese, molybdenum, copper, iron content of the survey results indicate that most parts of China have different degrees of micronutrient deficiencies. Trace elements in soil in a "moderate the lack of" state of presenting symptoms is not obvious, when the fruit trees and other crops by the lack of normal growth and metabolism of trace elements, the application of fertilizer will be able to change their micronutrient status, and may contribute to growth and increase production. This lack of effect is potentially wider than those with symptoms, more generally, is clearly a lack of trace elements in the range of potential far beyond expectations.
　　

Yield and Quality and the fertilizer can increase the resistance to targeted application of fertilizer, not only can give full play to the economic benefits of fertilizer, more importantly, to improve fruit production as an effective technical measures. In recent years, the requirements of fruits gradual transformation from quantity to quality, rational application of fertilizer not only increase production, but also to improve fruit yield and quality is obvious, can effectively enhance the fruit of the disease, low temperature, high temperature and drought resistance reversibility.
　　

As we all know, trace elements relative to N, P, K and other large elements, the fruit of their requirements is small, but most of the tree body involved in physical activity, and highly specific, normal growth and development of crops that can not be missing and can not be replaced with each other fertilizers. The lack of any trace elements of fruit trees, the growth and development of the inhibited, resulting in cuts and decrease the quality. Application of excessive and would lead poisoning crops, affecting the yield and quality. To improve efficiency in the use of other fertilizers, it must apply, the fitness of crops, proper application of fertilizer, that is based on trace element abundance and shortage of soil, crop requirement and sensitivity, using a reasonable method of application of fertilizer application, with particular attention due to lack of applied not blind abuse.