In order to reduce the consumption of nutrients in the parental line of the seedlings and promote seedlings, the old leaves and diseased leaves of the mother plant must be timely excised and the flower stems must be removed; at the same time, 50 ppm gibberellin should be sprayed on the plants (ie, 20 g/g of gibberellin should be used for watering). Kg), spray twice, once every 7 days.
Second, timely irrigation fertilizer
According to the degree of soil dryness in seedlings, timely watering, maintaining soil moisture in the seedlings, under normal climatic conditions, continuous sunny 3-5 days of watering the seedlings once; when watering can be combined with ground thin fertilizer, require every other 15 to 20 days in the evening pouring some thin manure or 0.5% compound fertilizer, urea once.
Third, weeding and loosening stems
Timely weeding and loosing soil reduces the competition for water and nutrients between weeds and strawberries, which is conducive to the rooting of soil moisture and seedlings, and ensures the growth of seedlings. Weeding seedlings must be planted in time for weeding to avoid some rootlessness. "Floating seedlings"; at the same time grooming the stems and stems to ensure that each stem has a certain growth space, resulting in high-quality seedlings.
IV. Pest Control
The main pests in strawberry nursery are:
Aphids, red spiders, leaf beetles, Spodoptera litura, leaf spot diseases, etc.
aphid:
When it happens, it can be controlled by imidacloprid, such as 2500-3000 times of 10% imidacloprid.
Red spider:
In the initial stage of prevention and control, pharmaceuticals can use pyridazinone and acetylene terpenoids, such as 15% carbendazim 1200 times or 57% acetylene retinoic acid 2500 times, adding 99% chloropyrene 300 times more effectively in prevention and control. good.
Ye Jia:
In case of hazard, use 40% chlorpyrifos EC 800 times, or 5.7% Baishu EC 800 times for control.
Spodoptera litura:
In the seedling area, the trap is trapped to kill male adults and reduce the amount of insects in the next generation. Four traps are used per mu, which has a good trapping effect. It can also be controlled by chemicals, and 0.2% Fuda 1500 times, or 40% can be used. Chlorpyrifos EC 800 times, or 5.7% Baishu EC 800 times.
Leaf spot disease:
May-June is the peak season of leaf spot disease, and it is timely to prevent and control in the initial stage of disease. Timely cleaning of the diseased parts of the leaves and plants, and use 300g/L of oxastrobin. Niacinamide water dispersible granules 1000 times, or 50% Tribembe dry suspension 3000 times, or 65% Baitai water dispersible granules 700 times Liquid, or 99.1% of green eugenol 300 times mixed with Ye Fu WP 1500 times, or 5% nectonazole WP 1500 times, or 40% Fuxing WP 4000 times.
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