1. Application method of humic acid fertilizer such as Ammonium humate and nitro humic acid
1) Base fertilizer. Applying by spreading， hole，ditch. Applied to the soil with the plowing. The quantity depending on the crop and the soil.
2) Seed fertilizer. Applied when seeds are sown. The soil is best to be mixed in 1-3 times when the fertilizer is applied . So as to avoid the high concentration of the local fertilizer caused by the uneven application the fertilizer. Thereby affecting the germination of the seeds and the growth of the young roots.