How to rationally fertilize strawberry in winter

The seedling fertilizer is mainly composed of organic fertilizers such as composting, livestock fat, cake fertilizer and green manure, and microbial inoculants are added to improve the utilization rate of organic fertilizer. Combined with the application of chemical fertilizers such as superphosphate or potassium sulfate. 50 kg of cake fertilizer per acre, 3000 to 4000 kg of manure.

In order to promote the flower bud differentiation of seedlings, the seedbed fertilizer should be applied with a proper amount of base fertilizer on the fake planting bed, but the base fertilizer should not be excessive. In the mid-term of pseudo-planting, nitrogen fertilizer can be applied once, 5-10 kg of urea per acre or 150-250 kg of decomposed human excrement.

After the base fertilizer is planted, the strawberry begins to bloom and fruit. Since the growth period of strawberries is very long, the base fertilizer should be applied before planting. Apply 5,000 kg of farmyard manure per acre, add 6-8 kg of microbial inoculant, and mix it after application to alleviate soil continuous cropping obstacles and improve the utilization rate of organic fertilizer. For acidic soil, 50 kg of lime should be applied and can be applied to the soil after application. Planting the first year of autumn and the annual summer and autumn, each mu can be digging to apply compost 2000-3000 kg, cake fertilizer 50-100 kg, compound fertilizer 7-10 kg.

The specific application rate of top dressing should be determined according to the amount of fruit harvested. The multi-harvesting fruit should be fertilized more, and the less harvested fruit should be less fertilized. Before the initial flowering period, the compound fertilizer should be applied 10-15 kg per mu, and the decomposed human excrement 200-300 kg. Later, when the fruit is inflated and harvested, it should be topdressed separately. Throughout the growth period, it is necessary to topdress 4-5 times.

Foliar fertilizer should be sprayed on the leaves 2 to 3 times with 0.2%-0.3% potassium dihydrogen phosphate and 0.5% urea. In addition, in order to improve the quality of the fruit, it is necessary to apply a microbial agent and dilute 200 to 300 times for foliar application. At the same time, fruit rot is prone to occur when calcium is deficient, so pay attention to the supply of soluble calcium and increase the application of organic fertilizer. Increase the content of soil organic matter, control the amount of nitrogen fertilizer, and irrigate the soil to maintain uniform soil moisture.

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