MKP in Orange plant application
Phosphorus and potassium play a vital role in the growth and development of citrus, and are closely related to citrus tree potential, fruit quality and stress resistance.
Phosphorus is a component of many important compounds in citrus and is involved in plant metabolism in a variety of ways. As a "producer", phosphorus has various functions such as rooting, promoting flower bud differentiation, and providing energy for fruit expansion.
Potassium has the ability to improve product quality and adapt to the external adverse environment, and is known as quality element and stress resistant element. Potassium, as a "porter", slows down aging, improves photosynthesis, promotes nitrogen absorption, increases sugar and moisture of fruits and promotes ripening, enhancing citrus disease resistance and stress resistance in the late growth period.
Potassium dihydrogen phosphate is a high-quality and efficient phosphorus-potassium compound fertilizer, which is widely used in citrus. Due to its good water solubility, it gives full play to the role of phosphorus and potassium, especially when used in the later stage of fruit coloring, the effect is very significant, and it is loved by fruit farmers.
Use of potassium dihydrogen phosphate on citrus
As the temperature rises, the restoration of citrus root vitality and the germination of spring tips require a large amount of tree nutrients. However, the growth of new citrus roots is later than the growth of spring tips, so high-purity potassium dihydrogen phosphate (phosphorus and potassium source library) can be sprayed 600~800 times liquid on the foliar surface to help citrus quickly restore tree potential, while paying attention to the supplement of nitrogen fertilizer and other medium and trace elements.
Spring growth period - first flowering period
The spring growth period of citrus is also the flowering period of citrus, and vegetative growth and reproductive growth compete with each other, which has a great impact on tree potential. At this time, foliar spraying of phosphorus and potassium source library 600 times liquid can promote the ripening of spring tips, provide sufficient nutrients for the normal development of flower vessels, and at the same time, have a certain effect on preventing spring cold.
Flowering stage - young fruit stage
The demand for phosphorus in citrus flowering is relatively large, and a large amount of nitrogen will be consumed after flowering, and the demand for potassium will increase significantly at the young fruit stage. Therefore, it is necessary to timely Xie Hua stabilize the fruit fertilizer, and pay attention to the foliar topdressing of phosphorus and potassium source bank 600~800 times liquid, and supplement the corresponding trace elements such as boron, calcium, etc., to help supplement tree nutrition and reduce physiological fruit drop.
The early stage of summer germination
In the early stage of spring ripening, foliar spraying of phosphorus and potassium source library 600~800 times liquid + 15% paclobutrazole 300 times liquid can control the growth of summer tips; If the hanging fruit tree is not controlled due to excessive growth in summer, it is necessary to spray 800 times the liquid of phosphorus and potassium source library + 800 times the foliar type liquid of the sea elf biostimulant to promote the aging of the summer tip, or use the method of wiping the tip.
The growing period of summer shoots
For trees with average tree potential, spring tips are not yet mature, yellowing, young fruits swell slowly, and physiological fruit drop is serious, 800 times liquid of phosphorus and potassium source library + 800 times of foliar type liquid of sea elf biostimulant can be sprayed, and sea elf biostimulant can be sprayed at the same time to solve the yellowing problem caused by the root system and achieve the purpose of fruit preservation and fruit stability.
For fruit trees with vigorous growth and excessive competition for nutrition, phosphorus and potassium source library 600 times liquid + 15% paclobutrazole 300 times liquid + liquid calcium fertilizer 1000 times liquid 2~3 times can be sprayed to achieve the purpose of controlling and preserving fruits.
Fruit expansion period
In order to supplement tree nutrition, phosphorus and potassium source bank 600 times liquid + liquid calcium fertilizer 1000 times liquid can be sprayed 1~2 times to promote fruit expansion and reduce the occurrence of split fruit.
Autumn period
The best time to put autumn shoots is after summer, between light summer and big summer. Wipe the buds 1~2 times before putting the tips, which is conducive to the neat germination of autumn buds, and the ditching is sprayed with sea elf biostimulants, which can effectively promote the shoots.
For trees with too much hanging fruit and immature autumn tips, in addition to flushing water-soluble fertilizers to ensure nutrient supply, you can also spray 800 times liquid of phosphorus and potassium source library + 800 times liquid of foliar type of sea elf biostimulant on the surface to help the autumn tips turn green and puff fruit.
Coloring period
In the citrus coloring period, mineral elements, especially phosphorus, potassium, boron, etc., can help citrus color change and sweeten, can be sprayed with phosphorus and potassium source library 600~800 times liquid in the early and middle stages of coloring, 1~2 times.
Fruit picking period
Spraying 800 times of phosphorus and potassium source liquid in the early stage of citrus harvest can improve the luster of the peel, improve the quality, reduce the floating skin, and extend the storage period.
After fruit picking, combined with Qingyuan, foliar fertilizer is immediately given to supplement tree nutrition to help restore tree strength, and 800 times liquid of phosphorus and potassium source library + 800 times liquid of sea elf biostimulant can be sprayed on the foliar surface, which can also improve the cold and frost resistance of citrus.
brief summary
● Potassium dihydrogen phosphate is widely used in citrus, and is mixed with nitrogen fertilizer, micro fertilizer and pesticide, saving labor and effort, and improving fertilizer efficiency and medicinal efficiency.
● Potassium dihydrogen phosphate promotes the reproductive growth of plant bodies, and should be used with caution in the plant nutrition stage, such as citrus when promoting autumn.
● When spraying the leaf surface, pay attention to the front and back sides of the leaf can be more fertilized water. At the same time, note that foliar top dressing is a supplement to plant fertilization and cannot replace base fertilizer and root fertilization.
● When using potassium dihydrogen phosphate, potassium dihydrogen phosphate with high purity and good quality should be selected, such as the phosphorus and potassium source bank of Hunan Huaken, which has low impurity content of high-quality potassium dihydrogen phosphate and high absorption and utilization rate when spraying on foliar spray. The use of inferior products is not only inefficient, but also easy to have adverse effects on citrus.
