Spring bud germination Sincere 0.2% after the 1st zinc sulfate, spray before flowering +0.2% 0.5% urea +1% potassium superphosphate 1, Xie spent 2 / 3 or after flower with 0.4% ~ 0.5 % urea +0.2% ~ 0.3% potassium dihydrogen phosphate and the Flower and Fruit insurance agent (green Sanxiao God) with the spray, the fruit expansion phase with 0.3% urea + 3% + 0.5% potassium superphosphate spray Shi. Block Fruitlet after stabilization in order to maintain adequate soil moisture, the key in the fight 10 days before the spring time water.
Fourth, lemon fertilization
Not the result of fertilization of young trees to promote tree up as soon as possible to put into operation as soon as possible. It should be noted, appear to prevent over-fertilization of the spindling phenomenon of excess nutrients, so as to avoid delay in beginning to bear fruit. Saplings fertilization, it is necessary to grasp the "Qin Shi, Bo Shi" principle, young fruit trees mainly fertilization three times a year:
The first time in mid-February in the fertilizer that is spent before the fat, accounting for 25% of the year, 800 per mu manure should Shi ~ 1600 kg, 8 kg of urea, SSP 8 ~ 16 kg, and compound 8 to 16 kilograms.
Fertilizer in the second by the end of June to early July, accounting for 50% of the year, Shi manure per acre should be 1600 ~ 3200 kilograms, 16 kilograms of urea, SSP 16 to 32 kilograms, 10 kilograms of compound 8.
Fertilizer in the third by the end of August to early September, accounting for 25% of the year, 800 per mu manure should Shi ~ 1600 kg, 8 kg of urea, SSP 8 ~ 16 kg, and compound 8 to 16 kilograms.
Five, pest and disease control
The use of agricultural control, biological control and chemical control, such as an integrated approach to the sources, at the lowest level.
Agricultural prevention and control: Increasing manure to enhance the resistance of the tree, clean and garden ground in addition to weeds, pests to eradicate the host, the hard pruning branches, sticks disease, insect sticks to prevent the spread of pests.
Biological control: fruit chicken, ducks, bees have a certain effect.
Chemical control: to prevent mainly to rule as a supplement to understand the condition, master pests, see period, the right remedy. Area spraying is necessary to unify the major prevention and control, the use of pesticides to the rotation.