The invention discloses a high-yield cultivation method for northern
greenhouse syzygium samarangense, which comprises the following steps: (1) pre-flowering
shoot strengthening
fertilizer: in the early stage of
bud germination of
syzygium samarangense, digging a shallow
ditch with the depth of 10-15cm in the range of a crown water drip and applying
shoot strengthening and flower promoting
fertilizer once; (2) accurate
nutrition supply in a young fruit period: when young fruits are 2-3mm in size, carrying out first root topdressing; when young fruits are 5-7 mm in size, secondary root topdressing is carried out; (3) regulating and controlling water and
nitrogen in a fruit expanding period: when the
diameter of the fruit is about 2 / 3 of the size of a mature fruit, stopping supplying the
nitrogen fertilizer in all forms; the
water content of the soil is controlled to be 50%-60% of the field
moisture capacity until one week before harvesting. According to the method, three key links of tip strengthening before flowering, accurate
nutrition supply of young fruits and later-stage water and
nitrogen regulation and control are organically combined, a complete
nutrition management chain is formed, the problem of space-time mismatching of nutrition supply is solved, and collaborative improvement of improving
sweetness of the
wax apple fruits and reducing cavities is achieved.