Dense cultivation techniques of vegetable citrons

The use of pods for dwarfing and dense planting of vegetables is not only convenient for picking and intensive management, but also for the annual production of greenhouse greenhouses. In the second year, the yield per mu can reach 280 kilograms, and the third year can reach 450 kilograms with considerable economic benefits. The technical points are now described as follows: Take heart. In the first year, when there are 3 pairs of 20 cm long pinnate leaves in the shoots of the newborn, the upper young shoots are removed and secondary secondary shoots are promoted between the leaves and the buds; in April-July, the hearts are picked up 2-3 times. After the second picking, the newly germinated shoots left two secondary shoots. In the second year, after picking the buds in mid-April, Mushi urea was 20 kilograms, superphosphate was 50 kilograms, and earth-fertilizer was 2000 kilograms. After the application, the manure was turned into the soil, watered and covered with plastic film, in mid-June. Remove the plastic film. After the new shoots grow, keep 2-3 new shoots for each shoot, and wipe the rest in time. Afterwards, it will be picked up every year to control the prosperous and provocative side branches and finally make the plants 2-3 meters high. 2. Pruning. When the sapling grows to 40-50 cm in height, leave 25-30 cm short cuts to promote lateral branches, choose to stay 2-3 lateral branches; when the lateral branch length is 30 cm, leave a short cut of 10 cm to promote secondary lateral branches; After 3 years, it can be cultivated into a dwarfing multi-headed tree with a height of 100-150 cm and with four lateral branches, which not only increases the yield, but also facilitates the picking and intensive management. After the harvest is completed, the branches will be cut short and the height of the tree will be controlled. The old branches and weak branches will be neglected. After a few years, the canopies expanded to shade each other, and some plants could be removed each year. In addition, in the May-June period of the second year, the first-level auxiliary shoots were subjected to circumcision, cutting every 10 centimeters long and cutting 2-3 times in total. Road can also play a role in controlling height and triggering collaterals. 3. Chemical control. In the first year, spray inhibitors can be sprayed to control plant growth. From early August to early September, 300 mg/kg PPm inhibitors were sprayed 10 days apart and sprayed 2-3 times. In the first half of June of the next year, 1 gram of dipylamine was used to add 75 kilograms of water, and foliar spray was used to control the growth of new shoots. The second shot was sprayed 10 days later and the third time in early August. 4. Dense planting. Hexagonal clumps can be planted, with 600 acres planted; ridges can also be ridged and cultivated, ridge width 1.5 meters, length depending on the plot, planted 3 rows, plant spacing 50 centimeters, acres planted 10,000 or so .