1, according to crop growth and leaf color application. Shi wax fertilizer can not engage in "one size fits all", depends on the growth of winter crops and leaf color conditions. Dark-green long-grained seedlings should not be applied to wax fertilizer. The green leaves should be applied with less or no wax, and the thin green-yellow seedlings should be reused.
2, see the application of soil fertility. For fertilizers with high fertility and adequate fertilizer, little or no wax fertilizer can be applied; for those with low fertility, low base fertilizer, and no fertilizer, phosphorus and potassium fertilizers should be added; for a year, single-use fertilizers should be increased. Apply organic fertilizer.
In addition, do not indiscriminately apply fertilizer to prevent crop growth after the spring season, resulting in winter crops fall or late maturity and reduce production. The application of paraffin fertilizer to sandy soil is repeated several times to prevent loss of fertilizer leaching.
3, see the application of crop species. The application of wax must vary from crop to crop.
(1) Application of rapeseed wax: The mixture of manure and phosphate fertilizer should be rotted and rotted. About 1500 kilograms per acre of rice field should be applied to the rapeseed rows, combined with earthworms, and applied in late December to early January of the following year. Early maturing rape varieties should be applied earlier than late mature rape varieties due to early spring development.
(2) Application of wheat wax fertilizer: It should be applied in the middle and late December, and strong earthworms should be applied to strong seedlings. However, weak seedlings and late-maturing wheat should be mixed with appropriate amount of phosphorus fertilizer in earth miscellaneous fertilizers. Mu Datian applied or spread about 2500 kg of miscellaneous fertilizer.
(3) Application of green fat wax fertilizer: 150-250 kg of ash or a thin layer of pigs and cattle manure are applied per acre.
(4) The application of castor wax fertilizer: the application amount should account for about 50% of the annual fertilization amount, about 5,000 kilograms of soil manure per acre of field and about 2,500 kilograms of pig, cow manure, and be used before frost as snow it is good.
4, according to the weather conditions. If the temperature is lower, the delayed manure, compost, pond mud, ash fertilizer, or manure urine will be used. When the temperature is high, grab the easily decomposable urea, ammonium chloride, ammonium bicarbonate and other fertilizers. Under low temperature conditions, ammonium bicarbonate evaporates less and can be quickly absorbed and utilized by overwintering crops when applied to soil. At the same time, ammonium bicarbonate is cheaper than urea. Wheat and rape are topped with ammonium bicarbonate 25-30 kg per mu.
5, organic fertilizer and fertilizer with. Such as decomposing pig dung, human excreta, fermented pond mud, river mud, old brick soil, fire and earth ash, cake fat, etc. are all high-quality organic fertilizers. For thin and thin seedlings, human feces and urine plus nitrogen fertilizers are mainly used. , To promote seedling thick; strong seedlings should be pond mud, soil miscellaneous fertilizer based.
If the application of cake fertilizer, 40-50 kg per acre field is appropriate, organic fertilizer for wax fertilizer. Concentration should be avoided in the roots, to prevent the concentration of fertilizer around the roots of crops is too high during the drought, resulting in reverse osmosis and physiological water loss, resulting in the death of the winter crops. If a drought occurs after the application of wax fertilizer, it should be combined with water drought, water to fertilizer, the effect is better.
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