论文部分内容阅读
二元复(混)合肥料在黄土地区富含钾素的土壤上,对农作物具有显著的增产效果。田间试验结果表明,不同品系的复(混)合肥料对小麦、棉花、玉米等作物都具有很好的效应,其增产作用超过单元化肥。施复(混)合肥料比单施尿素亩增小麦53.6—95.2公斤,亩增籽棉30—63.3公斤,亩增玉米6.6—54.1公斤,在三种作物上的效应依次为小麦>棉花>玉米。以磷酸一铵和尿素磷酸铵的效应最高。在小麦和棉花上,它们比单施尿素增产30％以上,也比等养分(尿素+重钙)的增产作用大,且利用率也高。其效应依次为磷酸一铵>尿素磷酸铵混配粒肥>尿素普钙混配粒肥>磷酸二铵>硝酸磷肥。在黄土区小麦、棉花、玉米等作物上推广面积已达60.7万亩,增产效果十分显著,比农民习惯施肥平均增产35.7％。经济效益可观,每亩增加纯收益30元左右。
Binary complex (mixed) Hefei expected in the loess soil rich in potassium, the crop has a significant yield increase. The results of field experiments showed that the complex (mixed) Hefei fertilizer of different strains had good effects on crops such as wheat, cotton and corn, and the yield was more than that of unit fertilizer. Shi Fu (mixed) Hefei than single urea fertilizer 53.6-95.2 kilograms of wheat, 30-63.3 kilograms of additional seed cotton, mu by 6.6-54.1 kilograms of corn, the effect of the three crops were wheat> cotton> corn. Ammonium phosphate and urea ammonium phosphate the highest effect. In wheat and cotton, they produce more than 30% more than urea alone, and also produce more yield than other nutrients (urea + TSP), and the utilization rate is also high. The effect followed by monoammonium phosphate> urea ammonium phosphate mixed fertilizer> urea calcium mixed granular fertilizer> diammonium phosphate> nitrophosphate. In the loess area wheat, cotton, corn and other crops to promote the area reached 60.7 hectares, the yield is very significant, an average increase of 35.7% over peasant habits. Significant economic benefits, increased net income per mu 30 yuan.