Study On Application Of Zinc Humic Acid Value Added Fertilizer In Northeast Corn And Rice

In this paper, the fertilizer added a little zinc and humic acid, a kind of the Value-added fertilizer was studied. We chose to apply it on northeast spring corn and rice in Wafangdian City, field experiments were carried out to compare the value of zinc humic acid urea and common urea. In experimental field of Shenyang Agricultural University, field experiments were respectively carried out to compare zinc humic acid diammonium phosphate with common fertilizer which has equal amounts of nitrogen as fundamental and seed fertilizer. The effects of zinc humic acid urea on the biological characters and yield of corn and rice,and zinc humic acid diammonium phosphate on the soil nutrient in growth period, biological characters and yield of corn were studied. Results showed:1.Under the treatment of zinc humic acid urea and common urea topdressing, the plant height and the number of rows on corn were basically the same, but the former was significantly higher than that of the latter in the ear diameter and grain weight. The yield of corn treated with zinc humic acid urea reached 665.08kg/mu, and the yield was increased by 8.15% compared with common urea treatment.2. Under the treatment of zinc humic acid urea treatment, plant height, effective tiller rate, grain number per spike of rice significantly higher than topdressing urea alone, and blighted grain number and grain weight were slightly lower than common urea. On the yield, the treatment of zinc acid urea was improved by 7.39% compared with that of ordinary urea treatment.3. Under the treatment of zinc humic acid diammonium phosphate as fundamental fertilizer, soil pH value was almost the lowest in each growth period. The release of soil available N, P and K had a positive effect. Soil N, P and K were the highest in each period, and reached significant difference compared with diammonium phosphate fertilizer. Otherwise, plant height, ear row number, ear diameter are better than ordinary fertilizer treatment, the yield reached 626.73kg/mu,3.98% over normal fertilization treatment.4. Application of zinc humic acid diammonium phosphate as seed fertilizer, soil pH value did not change obviously. In the early growth of treatment soil available nitrogen content was lower than that of diammonium phosphate treatment. In the later stage, the opposite is the case. In the soil available phosphorus and potassium content, treatment of humic acid diammonium zinc increased obviously. There is no significant effect of zinc humic acid diammonium phosphate in promoting growth and production.