Mango belongs to one of intertropical fruits. Contain rich nutrition, love by people. The farmer friend that cultivates mango has had such experience for the most part, cultivated mango did not see any symptoms from appearance, but after incision, in the shape of in-house occurrence leach of mango. Some inside already nigrescent, spread outwards gradually. After passing 3~5 day commonly, ill spot spreads to peel, decay next fall off. Bring very big pecuniary loss to cropper. Decay of interior of general mango fructification has state of disease of 4 kinds of hair roughly:
1, after awn fruiter bacteria is affected, be called " sponge organization is ill " the discovery after mango sliver, peel interior gives the organization that bacterium of a existing dividing line is clear black Brown catch a disease catch a disease affects. Mature gradually later as fructification, in-house pulp also as black bacteria patulous blacken further cankered.
2, mango appears " hollow disease " , the empty anxiety of mango does not affect other pulp to appear cankered, just be all round hollow place Brown pulp is organized, because this is called " hollow disease " .
3, of mango " soft nose is ill " , the other position in mango all normal, just appear in the peel interior of fructification coping the phenomenon of pulp bate.
4, the heart corrupt of mango is ill, pare fructification discovery, the pulp that standing by peel is basic and normal, there just is the appearance of wet corrupt bate in the pulp all round the seed, because this is called " heart corrupt is ill " .
Produce the reason with ill decay of mango black heart to have a lot of, for instance: 1, concern with the breed of mango. For instance mango fructification compares big Ji Lu, kate, jin Huang come on opposite a few heavier. A few breed with relatively minor gains, come on opposite a few lighter. Fructification has plucked come on late opposite a few heavier.
2, opening florescence with mango likely, the humidity that encounter is concerned greatly, opening florescence to receive rain for instance, the pathogenic bacteria inside rainwater, direct by the flower implement the canal inbreaks the hidden trouble that buries next catch a disease catch a disease, the mildew anxiety of this and northward apple causes disease basic a truth, if malic tree is opening florescence to encounter rainwater to invade, if do not take step of significant prevention and cure, mildew sore point of the apple will be opposite grow in quantity. Because this mango is opening florescence to encounter weather of microtherm overcast and rainy, the humidity inside the orchard is higher, come on heavier.
3, with illumination, temperature is concerned, the picked mango after maturity, if point-blank time falls to grow too in the sun, the happening with black heart ill decay appears. Because of the mango after this is picked, should avoid point-blank below the sun time to grow too, avoid to produce local high temperature burnable mango.
4, as relative as edaphic condition, the edaphic PH value with optimum mango is between 5.5~7.5. Edaphic small acid is helpful for mango growing to neuter. Come on commonly heavier often is a few acidity soil and barren sandy soil land, adjust edaphic acid-base value uses pair of soil to apply right amount lime commonly. Between the process that has fertilization to awn fruiter, used the cultivate birds excrement and urine without become thoroughly decomposed, especially the gallinaceous dung without become thoroughly decomposed is more apparent, such fertilizer uses be buried area, undertake fermenting producing quantity of heat and organic acid in soil. The root system that affects awn fruiter absorbs fat water normally, serious person appear burn a root, cultivate the nutrition of need to cannot be satisfied to mango, affected the unripe the way corp is growing of awn fruiter. Contract disease easily.
Slant when awn fruiter apply nitrogenous fertilizer, oversight the complement of all sorts of microelement, for instance roc, the microelement such as calcium, awn fruiter likes very to calcium, calcium of the lack in soil can appear cellular wall is thin, peel surface attenuates, thick degree insufficient, fight go against a gender opposite poorer, appear easily disease. When fertilizing to awn fruiter, should pay attention to the scale of NPK, increase potash fertilizer appropriately, phosphate fertilizer and in of microelement devoted.
The disease of black heart decay of mango basically is given priority to with precaution. In mango blossom sit fruit period, the key that is precautionary disease period. A week that cultivates in mango is controlled, undertake Quan Shupen is aspersed 70% methylic 600~800 of the ferry that hold cloth in the palm times fluid + 600 times fluid the 3% much element that fight mildew + the ester inside element of Yun liver mosses adds synergist of organic silicon pesticide to mix even later spray. Can spray 3 times so, of the 2nd ubiquitous mango florescence sprays first, of the 3rd ubiquitous mango fall florescence sprays. Can enhance the disease resistance ability of awn fruiter, carry bema fruit to lead, reduce disease of black heart of the following mango to happen. Come after awn fruiter blossoms a month, with spray twice high grade liquid calcium is fat + the day is amounted to 2116, compensatory mango is right calcic demand, in before fructification is mature and picked 3 weeks, have complement even the liquid is calcic. Opening florescence to spray pesticide has certain effect to awn fruiter, want to choose to undertake spraying afternoon, keep away from as far as possible fill florescence. Undertake with medicaments fill root has certain effect at the same time.
