Planting techniques of Shangshu 19
To plant Shangshu 19, it is necessary to master the appropriate row spacing. Similar to other varieties, Shangshu 19 can be cultivated in many seasons with few diseases and insect pests, and watering and fertilization depends on the growth situation. It is a high-yield variety to replenish fertilizer and water in time after picking.
Planting techniques of Shangshu 19
1. Row spacing of cultivated plants
When cultivated in the nursery, the plant spacing is 2528 cm and the row spacing is 35 cm. Top when it grows to 20 cm after survival to promote the growth of petiole and start picking when the petiole is 20 cm long. The first picking should be carried out 30 days after planting, and then should be picked every day. The picking length should be kept short and carried out in a cycle. The petiole can be picked 4500 kg / ha per month.
2. Planting time
The planting of Shang Shu 19 is not limited by the season. It can be planted in greenhouse in winter and spring, which can basically achieve annual supply. But at present, large-scale production is mainly cultivated in open field in summer and autumn.
3. Planting advantages
The growth rate of stem and leaf is fast, the leaf is big, the stem is thick, the petiole is thick and long, and the high yield can be obtained by replenishing fertilizer and water in time after picking, and the income is considerable. Vegetable sweet potato has strong drought tolerance, barren resistance, wide adaptability and less diseases and insect pests. Generally, it can obtain higher yield without the use of pesticides. Vegetable petiole is a pure natural green vegetable.
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