Precocious cultivation techniques for small greenhouses in strawberry
First, small sheds for building sheds can generally be set by the width of two cultivars (about 3m wide). Insert two ends of the bamboo or wooden pole into the outer edges of the back and forth of the north and south sides, insert one root every 0.5m along the longitude direction, and set up the column support in the middle of the back and the ground, so that the middle height of the scaffold is arched For 1m, it is advisable that the length of the shed is 10-20m to facilitate ventilation and management. The shed is north-south and the scaffold is covered with 0.06mm thick polyethylene film.
Second, colonization in late July to early August selected 5 to 6 leaves, short stems, new roots more shoots or new stem shoots colonization. Cultivation field should be selected fertile soil, per 667 square meters of high-quality decomposing ring fertilizer 700 ~ 800kg, and mixing superphosphate 35 ~ 50kg. According to the row spacing 25cm (each row of 6 rows), planting distance of 20cm. Immediately after planting watering, the first 4 to 5 days, each watering 1 times: after easing, there are 2 to 3 leaves when the combination of watering, topdressing urea 7.5 ~ 10kg per 667 square meters, in order to strengthen The formation of seedlings and flower buds.
Third, field management
1. In mid-December, the soil was poured with frozen water before it was frozen. When the surface was slightly dry after 3 to 5 days, the seedlings were covered with 0.015 mm thick plastic film. Tighten the mulch, close to the ground, compacted with soil around. The mulch film cover wheat straw and rice straw 3cm thick to ensure safe wintering of seedlings.
2. The shed is started in early February. Shed shed too early, seedling sprouts are vulnerable to cold currents after saplings; too late will reduce the effect of early maturing strawberry production. Before covering the shed, the cover on the mulching film shall be removed, and then the plastic film cover shall be placed on the scaffold. In the middle and late April, when the natural temperature can meet the needs of the growth and development of the strawberry, the shed can be uncovered so as not to overheat the shed. High, affecting the fruiting of the strawberry.
3. The shed should be enclosed within 1 week after the shed to promote the rapid increase of temperature and ground temperature in the shed so that the plant can germinate early. After budding, cover early and cover every night, and gradually transition to cover early cover. During the sprouting period of strawberry, the shelf temperature should be controlled at 15-20°C; the flowering result should be controlled at 20-25°C, and the maximum should not exceed 35°C. After the buds are all on the membrane and the sprouts are exposed, all the mulch film will adhere to the ground and continue to protect the root system. Strawberry enters growth and budding stage, top-dressing 10kg to 15kg of phosphorus and potassium compound fertilizer per 667m2. To chase or not chase nitrogen fertilizer. Generally, as long as the soil quits, it is not necessary to water, so as to avoid excessive humidity, resulting in leggy seedlings that are not conducive to results.
Fourth, the fruit harvested at eighty-nine can be harvested when mature, so as to avoid shed due to excessive temperature and humidity, resulting in rotten fruit.
Author: Zhaozhai Science and Technology Department, Qimiao Township, Fuyang City, Anhui Province
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