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1, drought-resistant seedlings. Strawberry is not resistant to high temperature crops, and its drought resistance is weak. The seedbed should keep the soil moist. During the continuous high temperature and drought period, it is required to water the running horse water for 3 to 5 days. It is better to water the water in the evening. After the water is poured into the ditch, the remaining water can be drained, and the soaking time of the seedlings cannot be allowed to be too long. Conditional micro-spray irrigation can be used, saving labor and good quality.
2, shading and cooling. It is advocated to use sunshade net to cover the cooling, to hang the shed, to reduce the light intensity, which is conducive to seedling and promote the differentiation of flower buds, especially for varieties with high temperature and drought resistance such as red cheeks and Zhang Ji.
3. Strengthen plant management. In order to promote seedlings, 50ppm gibberellin (ie, 20 kg per gram of gibberellin powder per gram of water) can be sprayed in the early stage of seedlings, and the leaves are sprayed twice, at intervals of 7 days. Remove old leaves and diseased leaves in time to reduce nutrient and water consumption. Smooth the stems and put the initial seedlings (2 expanded leaves) into the vines or fake plants in time.
4, timely topdressing. According to the principle of “thin fertilization and diligenceâ€, biogas slurry fertilizer, rare manure or 0.3% urea is applied every 15 to 20 days. It is generally used in the evening. It is forbidden to apply chemical fertilizer before the rain to prevent burning. For the strawberry seedlings with poor growth, the rooting agent is applied 1000 times for watering, and the dosage is 100 grams per mu.
5, loose soil weeding. Keep the soil of the seedlings loose, reduce the evaporation of soil moisture, prevent weeds from competing for water, and promote seedlings. When the grass is planted, the seedlings are prevented from “rooting the rootsâ€, and when the “floating seedlings†appear, the soil should be cultivated in time to promote the growth of the seedling roots.
6, prevention and treatment of insects. At the seedling stage of strawberry, there are mainly anthracnose, leaf spot, verticillium and Spodoptera litura, ground tiger, thrips and other pests. Once pests and diseases occur, it is necessary to spray drugs in time.
Anthrax and leaf spot disease: timely excavation of diseased plants, removal of diseased leaves, and burning of diseased stems. For chemical control, 25% of 100 grams of emulsifiable concentrate, or 25% of prochloraz 1000 times, or 100% of 100% of mancozeb, or 20% of Longkes 500 times. Or 80% Dasheng M-45 wettable powder 700 times liquid spray, once every 7 days, continuous control 2-3 times.
Verticillium wilt: The diseased plants were found to be promptly removed, and they were poured 2-3 times with 1000 times of Huangweiling, once every 7 to 10 days.
Spodoptera litura: You can use 0.2% Fuda Krabi 1500 times solution, or 48% lesbian 1000 times solution, or 40% chlorpyrifos 1000 times solution, or 5.7% Tianwang Baishu 800 times for prevention and treatment. It is also possible to use the special sex attractant of Spodoptera litura to trap male moths, and the control effect is good, and the cost is about 25 yuan per mu.
Earth Tiger: You can inspect the garden in the early morning and find that if there is a leaf shortage or a broken seedling, immediately excavate the soil next to the harmful plant; or chop the fresh lettuce leaves or stir-fry the rice bran, mix 90% crystal trichlorfon 500 times Liquid or 5.7% hundred trees get 800 times liquid in the evening when the seedlings are trapped; or 52.5% agricultural land 1200 times liquid, or 48% lesbian 800 times spray watering control.
Aphids and thrips: You can use 10% imidacloprid WP 2500 times solution, or 10% Dagong WP 2500 times solution, or 0.2% Fuda 1500 times solution for prevention and treatment.
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Using imported plastic high-purity durable polypropylene (PP) raw materials, with excellent resistance to chemical corrosion, such as DMSO, phenols, chloroform; inert to water;
After third-party inspection, no RNA/DNA enzyme contamination;
It can be used on automated machines, and the product size conforms to the SBS standard;
Can be used with stickers, silica gel, sealed, no leakage;
The flatness is good, and it can be transported for a long distance after being sealed with heat-Sealing Film;
The products are produced and packaged in a 100,000-class dust-free workshop, and the product quality is stable.
Strengthening strawberry seedling management in high temperature and drought period
At present, it is the key period for strawberry seedlings. According to the field investigations in Jiande and other places, the seedlings are moderate this year, which is slightly better than the large-scale lack of seedlings last year. However, red cheeks, Zhang Ji and other non-anti-anthrax cultivars have a general situation of seedling beds, and some of the plots of anthracnose are seriously ill, and there is a trend of violent morbidity. Spodoptera litura and ground tiger pests are also at the peak of the disease. In order to alleviate the current adverse effects of continuous high temperature and drought and occasional typhoon and rain, it is necessary to do a good job in breeding the following strawberry seedlings and managing the summers to meet the demand for normal seedlings for strawberry production this year.
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