The disadvantages of chemical
1.? Features in the improvement of soil physical properties, is not made clear water
2.Some species, such as chemical fertilizer, fertilizer, ammonia, if used in large quantities and for a long time to ทำให้ดิน more acidic. To solve by liming
3.The use of chemical fertilizers. Because of all kinds of salt chemical fertilizer If you put a lot of or put on the base of the plant to be harmful to plants and seeds of
4.The user must have the knowledge about chemical fertilizer reasonably. It is used as a return value of
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