Basic knowledge of planting

Sixteen elements such as carbon, hydrogen, calcium oxide, magnesium, sulfur, nitrogen, phosphorus, potassium, boron, aluminum, zinc, manganese, iron, copper and chlorine are called "essential nutrients" in the process of crop growth and development. Among them, carbon, hydrogen and oxygen can be obtained from water and air, and most of them are obtained from soil. When the soil can't meet the requirements, it must be solved by fertilization. The main factors affecting crop yield are: weather, soil and human measures.

Weather: It is a factor that affects crop yield. Some crops need long light, some crops need less accumulated temperature, and some crops need more accumulated temperature. For example, the whole growth period of wheat needs about 2300℃, and cotton needs about 3000℃. Water is the life of crops, and crops need a lot of water.

Soil: The quality of soil directly affects the yield, so it is very important to improve soil and increase soil fertility.

Rational fertilization is an important measure to improve crop yield. Different crops need different amounts of fertilizer. Only when the same crop needs water, how much fertilizer is applied and what climate it adapts to can it provide good growth conditions for crops.