First, the mixed solution of boric acid and urea can be sprayed on the leaves. Spraying a mixture of 0.2% boric acid and 0.3% urea to supplement nutrition before 10 and at the initial flowering stage can obviously improve the fruit setting rate.
Second, reasonable flower thinning. 7- 10 days before flowering, the inflorescence is shaped and the redundant flowers are sparse. The method of inflorescence shaping is: 1/4 or 1/5 to cut off the inflorescence tip and remove the poorly differentiated accessory spike. The method of thinning flowers is: two inflorescences can be left for strong branches (the thickness of 4-5 internodes is below 0.7 cm), one inflorescence can be left for fruit branches, and no inflorescence can be left for weak branches.
Sparse branches. Leave one fruit branch for every two fruit branches on the thick main branch, * * * leave 1-3. One fruit branch can be left on the weak branch, and all the branches below can be cut off.
Third, the results are top-notch. It starts five to six days before flowering. The standard of coring: It is appropriate to pick leaves with the size of 1/3, and at the same time, all the secondary tips should be erased.
Fourth, irrigation. Every 7 to 10 days.