1. Look at the growing trend of the crops: The dark green leaves with thick green seedlings should not be applied with wax fertilizer. The young leaves with green and blue seedlings should not be applied or applied. The thin green and yellow leaves should be replanted.
2, see the soil fertility: high fertility, the foot of the foot at the foot of the plot can be less or no application of wax fertilizer; low fertility, base fertilizer less plot or no application of base fertilizer plot to increase phosphorus and potassium fertilizer. For the year-round single application of chemical fertilizers, organic fertilizer should be added. The application of paraffin fertilizer to sandy soil is repeated several times to prevent loss of fertilizer leaching.
3, see the crop species: application of wax fertilizer must vary from crop to crop. 1 Rapeseed: The manure and phosphorus fertilizers were mixed and rotted. From late December to early January, 1500 kg per acre was applied to the rapeseed rows, and the roots were mixed with the soil. Early maturing varieties should be applied earlier than late-maturing varieties due to early springing. 2 Wheat: In the middle and late December of December, 2500 kg of mixed fertilizer should be applied or applied per mu of Datian. Strong seedlings should be applied to strong seedlings, while weak seedlings and late-maturing wheat should be mixed with appropriate amount of phosphate fertilizer. 3 Green manure: 150-250 kilograms of ash or a thin layer of pig and cow manure are applied per acre of field.
4, see the weather: the temperature is lower, the application of delayed manure, compost, pond mud, ash or animal and manure urine; when the temperature is high, grab the sunny and easy decomposition of urea, ammonium chloride, ammonium bicarbonate Fertilizers.
5, organic fertilizer and chemical fertilizer reasonable collocation: decomposed pig cow dung, human waste, fermented pond mud, river mud, fire and earth ash, cake fat, etc. are all high-quality organic fertilizer, to thin urea to human urine nitrogen The main chemical fertilizer is fertilizer, which promotes seedling growth; strong seedlings should be dominated by pond mud and soil miscellaneous fertilizer. Organic manure is used as a wax fertilizer and should be concentrated in the roots to prevent seedlings from drying out.
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