Base fertilizer can not be applied in winter and autumn
The rate of absorption of basal fertilizer by fruit trees depends on the absorption capacity of root systems, especially new ones. The deciduous fruit trees in winter have limited organic nutrients flowing from the leaves back to the roots, and the roots have poor absorption capacity. The cut-off wounds are not able to grow new roots at a later time. At this time, the base fertilizer will not work on the organic nutrient reserve in the tree. When the new shoots begin to grow in the coming year, a large number of new roots will occur and the fertilizer effect will be able to come out. This will lead to a longer bar and a longer stoppage. The long strips are prosperous and take away a lot of nutrients, affecting the development of the short and middle branches. After being stopped for a long period of time, they are in a state of deficiency of fertilizers, and their synthesis and accumulation of organic nutrient are insufficient, and flower buds cannot be formed in time.
However, in the autumn fertilization, the mid-early maturing varieties have been picked, and the late-maturing Fuji is also becoming mature. The entire tree has been stopped for a long time, and the long strips of the trees will also have to be stopped. The temperature difference between day and night in September is conducive to nutrient accumulation. The temperature of the soil is also suitable for root growth, and new roots grow from the half-month to 20-day period of fertilization. The early autumn basal fertilization has more nutrition for storage and will be neatly grown next year. It will grow fast and strong, and the leaves will be large and thick. It can be put into production as soon as possible to make nutrients, and it will not be “green and yellow,†especially those with medium and short branches. More, more early and short branches will accumulate and help to form flower buds.
It is not too late to apply basal fertilizer
The temperature in autumn and the ground temperature are relatively high, which is conducive to the decomposing and nutrient release of organic fertilizers. The fertilizer effect is easy to exert and the roots absorb quickly. In addition, the fruit trees after a year of germination, branching, flowering, the results, consume a lot of nutrients, timely fertilization before and after fruit picking, the restoration of the tree, winter cold and the second year of high quality and high yield has an important role.
The fertilization in autumn is better from the beginning of autumn to before the frost fall. If the fertilization is too late, not only the applied fertilizer will be difficult to absorb, causing waste, but the tree vigor will also be weakened due to the slow healing of roots, which will affect the flowering and fruit setting of the fruit trees in the coming year.
The selection of fertilizers in the fall should be based on organic fertilizers or farmyard fertilizers containing high organic matter. Such as sheep feces, pig feces, cow dung, etc., which is a long-term supply of fruit trees, a variety of nutrients basic fertilizer.
When applying basal fertilisers in the autumn, care should be taken to: 1. Fertilize the trenches so as not to be too shallow, otherwise it will cause the roots to float, which is not conducive to drought resistance and cold resistance of the fruit trees. 2. The original organic fertilizer applied must be decomposed. Do not apply raw chicken manure or raw sheep manure directly to the field, otherwise it will burn the roots, causing the tree to weaken, die or induce rot. 3. The water conservancy condition is good, water after fertilization, in order to facilitate the root absorption.
Fall fertilization susceptibility errors
Single application of organic fertilizer or compound fertilizer. Some people think that compound fertilizer is more “organic†than organic fertilizer, and that the price of fruit is low. In order to reduce investment, only compound fertilizer or urea is used, and no organic fertilizer is applied. If you do this year after year, it will cause soil compaction, poor ventilation, and high nitrogen content in the soil, thus inhibiting the absorption of other elements by the root system. Moreover, the single nitrogen fertilizer or compound fertilizer is not only prone to deficiency of the disease, but also the decline of tree resistance and serious rot disease. Soil nitrogen content is too high, the fruit is difficult to color, low sugar content, hardness decreased, intolerant of storage. In the case of overproduction, the fruit is not red, and it is not sweet to eat. Do not say how much money to sell per catty. I am afraid there are no merchants to ask for. Organic fertilizers are all nutritionally nutritious, but their contents are low. They can not meet the nutritional needs of fruit trees with high yields and must be supplemented with compound fertilizers. Of course, Wang tree is fruitless, and it can only apply organic fertilizer and no compound fertilizer.
In the autumn, when basal fertilizer is mainly organic fertilizer, supplemented by compound fertilizer and combined with organic and inorganic fertilizers, it can not only change the permeability of soil, but also meet the nutrient requirement of high yield of fruit trees, and can also increase the utilization rate of large fertilizers.
Spread the fertilizer directly into the ditch. Many people directly spread the fertilizer on the bottom of the fertilized ditch. If the ditch is 1.2 feet deep, the fertilizer is spread on the bottom of the ditch. There is no organic fertilizer on the 1 foot of soil on the top, and the effect of improving the soil is not achieved at all; Too shallow and too narrow, only 1 inch wide and 1 inch deep (equal to 20 centimeters wide and 25 centimeters deep). The consequence is that the fertilization is too concentrated and it is easy to burn roots. The correct approach is to dig 2 inches wide (40 centimeters) and 1 foot half deep (40 centimeters). Spread all kinds of fertilizer on the dug out of the virtual soil, stir well, and fill it back into the ditch. With this approach, all the roots in the fertilization ditch can “eat†the fertilizer and are not afraid of burning roots, and the 40 cm deep soil can be improved.
Fertilization site is not correct. Some people dig fertilization trenches inside the canopy. Others only dig a ditch between two rows of trees. The fertilization ditch is too far away from the top of two rows of treetops. It is wrong.
The correct fertilization site is vertically below the canopy, because this site absorbs the most roots. The closer it is to the trunk, the thicker the roots, but the less the absorption function. It is too far away from the top of the canopy, it does not absorb the roots, and it does not apply fertilizer. Spreading the fertilizer on the surface of the ground to drive the vehicle to the ground or digging the fertilizing ditch shallowly will make the root system more shallow and shallow, and it will not tolerate drought. Fertilizer trenching is 1 锨 wide. Fertilizer is too concentrated to burn roots and is not conducive to root extension.
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