Forecast that it will rain

 
Fertilization work was performed on some tea gardens.
“Lime nitrogen” is used here
Lime nitrogen (calcium cyanamide) dissolves in water in soil and releases cyanamide (H2CN2). After being hydrolyzed to produce urea, cyanamide produces ammonium and suppresses nitrifying bacteria, so the effect lasts longer than general fertilizers.
In addition, by substituting 24-40% of the annual nitrogen application rate with lime nitrogen in the tea plantation and applying it to spring fertilizer, the amount of nitrous oxide generated from the ridge soil of the tea plantation is reduced by about 50% on average. I can do it.