Principles of chemical fertilizer efficiency Based on
1. What type of fertilizer should be used to decide which fertilizer to use as fertilizer or fertilizer, fertilizer, single-what is completely assembled, and then prepare a fertilizer with
2. The type of rice varieties to be grown should decide whether to use, what not to plant rice, rice varieties susceptible range light, which responds to high-yield fertilizer and grown all year round or susceptible rice range light, responsive, low-yield, fertilizer, medium. 3. the soil at planting rice. Collect soil samples analyzed by f.a. sent to Government land development station. Department of agriculture, agricultural University Faculty and research centers all over the country.
4. The period of time that need to know sources should put fertilizer in rice. Light range susceptible rice should put 2 times, the first stage is over, Black Lace/na 15-20 days after sow rice germination and phase formation in flower bouquets rice rice is sensitive light range should include 3. 15-20 days after the rice germination The different stages of rice-rice and flower bouquets at birth
.5. methods of fertilizer application Use the appropriate methods to make efficient use of fertilizers such as compost and sow khratklop before black began sow the rice to stick to more growth, or growth. Rice had more growth phase and phase to create light honeycomb.
6. How to plant rice there are several methods, such as sow dry black embroidery in the form of water. Na cast These methods will determine what type of fertilizer. Time to enter, as well as appropriate holders rate
7. The fertilizer rate is used, based on the value soil analysis to provide the most efficient fertilizer use