How to better color the fruit
Open the light path and promote coloring.
Promote photosynthetic crops, promote fruit dry matter accumulation and soluble sugar accumulation, can better promote fruit color conversion.
Proper fertilizer and water to promote coloring.
In the fruit growth period, especially in the late growth period, it is necessary to continuously increase the application rate of potash fertilizer. Of course, some trace element fertilizers such as calcium, magnesium, zinc, boron and iron should be applied at each stage to ensure the balance of plant nutrition supply. For moisture, we only need to pay attention to properly control the amount of water after the fruit expansion and ripening period, and ensure a suitable drought environment as far as possible, which is more conducive to improve fruit sugar content and promote fruit coloring.
Reasonable load to promote coloring.
According to the specific results of the whole orchard, a reasonable layout of the amount of fruit per mu of the orchard, in addition, but also consider the tree potential of the plant, the moderate load of fruit trees can be written, those growing too weak or too prosperous plants should reduce the load, which is not only conducive to better coloring, but also greatly improve the fruit quality.
Physical technology, promoting coloring.
At present, most of the physical coloring techniques we use are girdling and fruit turning. However, girdling should not be carried out for all plants, but only for those plants with prosperous trees, but it is less used now because of the large amount of labor required and the high labor cost.
Chemical preparation, promoting coloring.
In terms of chemical agents promoting coloring, we synthesized and launched a new type of safe and efficient fruit colorant-propyl dihydrojasmonate (PDJ).Propyl dihydrojasmonate ((PDJ)) is a synthetic plant growth regulator, which is similar to (JA), a natural plant regulator commonly found in vascular plants, with the same function and similar mode of action, and has low toxicity to the environment. This substance produces jasmonic acid molecules by slow release on the surface and in vivo of plants and has a strong effect of inducing stress resistance and increasing yield. PDJ can also promote the coloring and early ripening of apples, grapes and other fruits.
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