Effect of Water-soluble Humic Acid Spraying Amount on Tomato

Using a single factor randomized block experimental design,the effect of the amount of water- soluble fertilizer spraying of humic acid on tomato growth was observed in Hexi irrigated area.The results showed that humic acid soluble fertilizer spraying tomato plants can effectively improve the agronomic traits and commodities of tomato plants,can significantly promote tomato yield,the optimum application rate was each 1 000 times spraying an aqueous solution of 750 kg/hm2 from the beginning of flowering tomato,every 10 days spray a second,and even spray four times at intervals.