[The effect of humic acid fertilizer and its reasonable utilization in rice cultivation]
1987
Ri, M.K. (Academy of Agricultural Science, Wonsan (Korea Democratic People's Republic). Kwangwondo Inst. for Agricultural Science)
The humic acid fertilizer made the chemical and physical characteristics of soil better, and the effect of fertilizer increased as follows; the absorption ratio as to 7.7% and the phosphorus fertilizer 20% higher. When the rice seed is treated, and the rice seedling bed applied by the humic acid fertilizer, the germination rate is increased to 4-9% higher, and the seedling gets strong to grow, by help of the action of growth acceleration
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