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How to Improve Fertilizer Using Efficiency
Key words: Fertilizer Use Efficiency, Fertilizer Application, Fertilizer Use, How Much
Fertilizer to Use, Fertilizer Ratio, Plant Fertilizer Ratio, Lawn Fertilizer Ratio, Fertilizer
Application Rates, Lawn Fertilizer Application Rates
1. Applying Proper Amount of Fertilizer
Within a certain range, the productivity of crops is positively correlated to
fertilizing amount. Excessively increasing total fertilizing amount or single
fertilizer applying amount may cause crop failure. Nitrogen, phosphorous,
potassium and trace elements needed by crops are all indispensible. Their
applying amount and ratio should be decided by soil fertility and the crops’
characteristics of requiring fertilizers.
2. Use the Right Fertilizing Method
★ Different fertilizer has different characteristics. We should choose
application method accordingly.
★ Make rational use of deep placement, concentration placement and bedded
★ Apply enough base fertilizer, making sure the crops have sufficient fertilizer
supply in seedling stage. At later stage of growth apply top dressing to avoid
fertilizer shortage. Top dressing can not only meet the crops’ demand for
nutrients in time, but also decrease the nutrients fixation by soil.
Different soil requires different fertilizing method. For argillaceous soil, mainly
apply base fertilizer and early top dressing. For sandy soil, applying more time
but smaller amount at each. For loamy soil, mainly base fertilizer, base
fertilizer and top dressing combined.
★Popularize the use of new high efficient fertilizer such as
slow/controlled-release fertilizer, ecological fertilizer, etc. By controlling the
releasing speed of fertilizer nutrient, slow/controlled-release fertilizer can
increase the fertilizer using efficiency at quite a high rate.
3. Rational Fertilizing Time
The critical period of nutrition and maximum efficiency period are two key
periods for crops absorbing nutrients. The critical period of nutrition is usually
in the early growth stage. In this period, the crops’ demand for phosphorous is
especially apparent. We should ensure proper amount of nutrients supply. In
the maximum efficiency period, the requisite amount of one or several
nutrients is large. Applying chemical fertilizer in this period can give play to
Some crops have different sensibility for different nutrient elements. Their rate
of absorbtion and utilization for sensible elements is high. We should apply
fertilizer in the crops’ most sensitive periods according to their growth period
and fertilizer requirement law.
4. Mixing Use of Chemical Fertilizer and Organic Fertilizer
Organic fertilizer contains comprehensive nutrients. By mixing chemical
fertilizer and organic fertilizer, we could cover the shortage of the single
nutrient of chemical fertilizer. Chemical fertilizer has fast efficiency, while the
efficiency of organic fertilizer is lasting. Mixing use of them can complement
each other, fulfill the nutrient supply of the whole growth period of crops. The
buffering and fertilizer conservation capability of organic fertilizer can help
reduce nutrient loss and further increasing fertilizer use efficiency.
The available nutrient in fertilizer should be dissolved in water before they can
be absorbed, conveyed and metabolized by plant root system. Irrigation of
proper amount can increase fertilizer use efficiency, but too much or too little
will cause the decrease of utilization rate.
We should improve the farmland infrastructure, raising the capacity of
preserving water. Improve the quality of cultivated land, raising soil water
retention and fertilizer conservation capability.