Double vine pruning is one of the pruning methods widely used in the production of top melons everywhere. Double vine pruning is often used in greenhouse and greenhouse cultivation. When the seedlings grow to 3-5 true leaves, core the main vine, and after the secondary vine grows, select 2 healthy ones and remove the rest from the base.
The selected two sub-tendrils are guided to the boundary to stretch them. The stretching direction of double tendrils can be parallel in the same direction, crawling backwards, diagonal stretching, etc. , mainly according to the location of the seeding point in the border and the habit of long-term application.
Three-vine pruning is the most common pruning form in melon cultivation. This pruning method saves more vines and is beneficial to early maturity. Both vine and sun vine can be used as early-maturing varieties of melon. The pruning method of early-maturing cultivation is to pick the core when the main vine has 4 leaves, choose 3 strong vine, and pick the core when there are 6-8 leaves left.
Extended data
Top melon likes farmyard manure, and it is tolerant to fertilizer. The whole growth process needs a lot of fertilizer. Therefore, under the condition of applying sufficient base fertilizer, reasonable fertilization should be carried out according to the law of fertilizer demand and different development stages of top melon.
At seedling stage, the growth of top melon is small and the nutrient absorption is also small. In the case of sufficient soil nutrients, topdressing is generally not required. When fertilizer is deficient, foliar spraying can be carried out, and 0.3%~0.5% potassium dihydrogen phosphate solution and 0.5%~0.8% urea solution can be sprayed every 5 days for 2~3 times continuously.
Topdressing of nitrogen fertilizer should be combined with watering at the vine extension stage, and the first topdressing should be carried out after slow planting, with 500 ~ 1 000 kg of decomposed human excrement and urine applied every 667 m2; The second time, when the vines are about 30 cm long, apply ternary compound fertilizer 10~ 15 kg every 667 m2.
After fruit setting, topdressing is carried out for the third time, and urea 15~20 kg or ternary compound fertilizer 15 kg is applied every 667 m2. After the ridge is closed, topdressing can also be applied to the leaves of plants, and 0.2%~0.3% potassium dihydrogen phosphate solution or 0.4% urea solution is used to spray/kloc-0 once every 5~7 days for 2~3 times continuously.
References:
Baidu encyclopedia-miaogua