Plant nutrition diagnosis recommended fertilization: summer corn, winter wheat
Technical brief: Second, recommended fertilization Summer corn: Winter wheat: Urine Bag,Disposable Urine Bag,High Quality Urine Bag Boda Medical Products Co., Ltd. , http://www.nbmedicals.com
Plant nutrient diagnosis recommended fertilizer based on the basis of nutrient balance recommended base fertilizer, nitrate concentration measured with nitrate reflectance analyzer during the crop growth period, nitrogen fertilizer recommended.
Test Note:
Wheat: At the jointing stage, 0.5-1 cm stems from the base of stem were measured and measured on sunny days from 8:00-11:00;
Corn: In the big bell mouth period, a 5 to 10 cm long sample of the middle part of the vein in the uppermost part of the fully expanded leaf was tested.
Basal fertilizer or seed fertilizer: urea 6 kg/mu; phosphorus diammonium 6 kg/mu; potassium sulfate or potassium chloride 16 kg/mu;
Top dressing recommendation: pure nitrogen 9 kg/mu, equivalent to urea 19 kg/mu.
Recommended basal fertilizer (before planting): organic fertilizer (fertilizer) 2-4 square/mu; urea 5 kg/mu; phosphorus diammonium 15 kg/mu; top dressing recommendation: pure nitrogen 6 kg/mu, equivalent to urea 13 kg/mu.