On fertilizer bags have some symbols, a correct understanding of these symbols, we can more clearly understand the chemistry and nutrient content of fertilizers, thereby leading to rational use of science.Typically, N fertilizer bags on, P2O5, K2O, r...
According to tests, nitrogen utilization by deep Shi Houping are 30% to 40%, P and K deep application can reduce the loss of wind erosion, promote crop absorption, prolong fertilizer, increase production rate is generally up to 5% to 15%.Fertilizer d...
First, look at soil conditions, soil sulfur deficiency should be used potassium sulfate; saline should be administered potassium sulfate, potassium chloride should not be chosen in order to avoid an increase in chloride ion content of the soil.Second...
Medium fertility level, 1 acre yield target from 2000 to 2500 kg. Fertilization growth period of broccoli per acre from 2500 to 3000 kg of farmyard manure (organic fertilizer products 350-400 kg), nitrogen (N) 20 ~ 23 kg, phosphate (phosphorus pentox...
Cucumber cause deformity factor in agricultural production are many, but the main factor is inappropriate fertilization. How scientific and effective fertilization is the most effective means of preventing cucumber deformity. Control the proportion o...
1, due to the soil because crop selection fertilizer varieties.General field crops can be used nitrogen and phosphorus compound fertilizer, legumes phosphorus and potassium compound fertilizer should be used, certain crops can choose three elements o...
Corn is high-yield crops, need a large amount of fertilizer, fertilizer must be reasonable in order to meet the needs of the entire corn growing period nutrient. According to tests, to produce 100 kg of maize seed, need 2.5 kg of nitrogen, phosphorus...
(1) in acid soils. Potassium chloride and potassium sulfate are physiological acidic fertilizer. Potassium ions are absorbed by crops or soil colloids adsorbed chloride ions and hydrogen ions in the soil colloids generate hydrochloric acid (HCl), to ...
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