Disadvantages of Long-term Application of Chemical Fertilizer

1, Chemical fertilizer does not contain organic matter and humus, therefore, a large number of chemical fertilizers are used. Because of the lack of organic matter and humus, the soil aggregate structure is destroyed, resulting in soil
compaction, and the yield of agricultural plants decreases.

2, The low utilization rate of fertilizer. Nitrogen fertilizer is only 30%-50% of utilization due to volatilization and loss; the utilization rate of phosphate fertilizer is 10%-25%, because of the phosphate chemical active and lively, most of the
phosphorus applied into soil and the soil Zn2+, Mg2+, Ca2+, Fe3+, Al3+ and other cations combine to form insoluble phosphate; and the utilization rate of potassium is only about 50%.

3, The heavy use of fertilizer greatly reduced the quality of vegetables and fruites. Not only because of crop nitrogen phosphorus and potassium, also need calcium iron zinc selenium and many other trace elements, and the general chemical
composition is relatively simple, so long-term use of fertilizer nutrients in the soil will inevitably lead to tend to single, easy to make crop nutrient imbalance, resulting in the plant internal conversion of synthesis is blocked, will inevitably lead
to decline in the quality of crops, the melon is not sweet that dish is not sweet.

4, Chemical fertilizer harms human health. A large amount of chemical fertilizer can make the content of nitrate in vegetables exceed the standard, and nitrite and amine combine to form N- nitrite compound, which is a strong carcinogen.

5, Extensive use of chemical fertilizer can lead a large scale of death, like soil bacteria, earthworm.

6. Long term inefficient application of chemical fertilizer often leads to excessive accumulation of some elements in soil and changes of soil physical and chemical properties and environmental pollution.

By Shunxin Fertilizer Machinery