Ratios of nitrogen, phosphorus and potassium requirements in rice cultivation

Basic nutritional properties of rice

The reproductive growth of rice is based on nutritional growth, and its developmental transformation must be based on a certain amount of nutritional growth. The length of the basic nutritional growth period varies from one rice variety to another, and this variation in the length of the basic nutritional growth period is known as the basic nutritional properties of the variety.

What is the relationship between major nutrients and rice growth?

Bulk elements (parts per thousand to parts per hundred): carbon (C), hydrogen (H), oxygen (O), nitrogen (N), phosphorus (P), potassium (K)

Medium elements: calcium (Ca), magnesium (Mg), sulphur (S)

Trace elements (parts per million to parts per million or less): iron (Fe), manganese (Mn), copper (Cu), zinc (Zn), molybdenum (Mo), boron (B), chlorine (Cl)

Among the essential nutrients for crops, carbon, hydrogen and oxygen come from air and water and are inexhaustible; calcium, magnesium, sulphur, iron and other elements can basically meet the needs of crops in the soil storage; the need for nitrogen, phosphorus and potassium are relatively large, while the storage in the soil is less, generally can not meet the needs of crop growth and development, to be supplemented by fertilisation, so called fertiliser " Three elements". Nitrogen, phosphorus and potassium have different effects on the growth of rice.