In addition to the choice of good varieties, it is necessary to establish nurseries for seedlings, the most suitable of which is june, and about three months。
Start-up on site with a range of 16. 3 cm x 16. 5 cm。
The transplantation of 10 to 20 seedlings is most appropriate。
Ii. A whole-field transplant of the thirties ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding dung ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding dung ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding ding fertilized farmers' manure of 4,000-5,000 kilograms or 100-150 kilograms of cake fat, plus] 50 kilograms of calcium perphosphate and 30 kilograms of potassium chloride。
The manure is spread and then the plough is turned over, while the pie fat is fed with water from 8 to 10 days to mix calcium phosphate and potassium chloride, and seedlings are planted in a ditch at depths of 30 to 40 cm。
3. The most rational planting period is august-september, followed by march-april of the following year, with a short and high rate of survival。
The range of the plant is 25 cm x 160 cm。
Cultivation takes place in two-and-a-half roots, fixed in a guacamole, sprouted towards the mid-line, then covered the soil by 5-6 centimetres, so that the root water is pressed。
Strengthening of manure management, 1 sapling period: once in a 20-25-day gap when a seedling is planted, and opening of drains to make it rain dry。
The first fertilisation was applied 20 days after planting, and the acres were applied with 5 kg of compound fat to 1,000 kg of water or in ditches。
After 40-60 days of planting, fertilization is applied every 25-30 days, with a compound fertilization of 25-50 kg or urea of 10-20 kg plus potassium chloride of 6-12. 5 kg。
Fertilizers are applied about every 25 days from 4 months to the time of planting, with 20 kg of urea and 12. 5 kg of potassium chloride in the acre。
Water after fertilization。
2. Harvest period: fertilizers are applied every 15-20 x, 20 kg urea per acre and 12. 5 kg potassium chloride during harvest。
At the same time, care must be taken to open four-side ditches and fields, dry water in the rain and water in the clear。
5. After planting the mother's penis for about five to six months, the seedlings will be able to select the last strain, which is 0. 8-1 cm thick, and will normally contain two or three healthy, disease-free and disease-free male and female males, and then remove the extra, tiny or oversized tubers。
30 kg of urea per acre and 15 kg of potassium chloride per urea per acre。
When the mother is selected, the platinum will be ready to be grown into a 30-40-centimetre-high compartment。
Vi. Prevention and control of pests and diseases include, among other things, nursery-planting in solar hothouses, small plastic arch-breeding, sun-breeding and field-breeding。
