桑树应用“百禾福”有机复合肥的效果研究

Studies on the effect of the biological activated organic compound fertilizer on mulberry tree

用“百禾福”生物活性有机复合肥作桑园施肥试验 ,结果表明 ,肥料的氮磷钾最佳配比是10∶5∶5 ;667m2施折纯氮45kg,效益最高 ,比等养分的化肥提高桑叶产量9.5 % ,桑叶粗蛋白和可溶性糖含量平均分别提高1.8个百分点 ,土壤有机质 ,速效磷和速效钾分别提高0.05、3.1和2.6个百分点 ,幼龄桑树氮磷钾肥的相对利用率分别提高27.5、15.3和18.0个百分点 ,与相等氮养分的纯氮相比 ,提高桑叶产量13.5 %。

Tested with the 'Baihefu' biological activated organic compound fertilizer,the results showed that the best compound fertilzer ratio of NP and K was 10∶5∶5;the proper dosage of compound fertilizer applied per 667m2 was 45kg of net nitrogen,the mulberry leaves yields was 9.5% higher than that of equal nutrient power fertilizers;the content of crude protein and soluble carbonhydrate in the leaf of the former increased by 1.8percent point than that of the later respectively;the content of organic matter,soluble P and K in soil of the former increased by 0.05,3.1,2.6 percent point than that of the later respectively;the ratio of fertilizer relative utiliaztion in the nursery of the former increased by 27.5,15.3,18.0 percent point than that of the later respectively.Compared with the control equal nutrient N,the compound fertilizer showed an increase of 13.5% in mulberry leaf yield.