不同施肥水平对毛花雀稗产草量的影响  

Effects of different fertilization levels on production of Paspalum dilatatum

作　　者：舒健虹 尚以顺 彭佳 

机构地区：[1]贵州省草业研究所,贵州独山558200 [2]大方县马场镇农技推广中心,贵州大方551900

出　　处：《草原与草坪》2007年第6期37-39,共3页Grassland and Turf

摘　　要：用二次回归旋转组合设计，研究了N、P、K、有机肥对毛花雀稗产草量的影响，建立了试验因素与产草量之间的数学模型，并对模型进行分析。试验结果表明：对毛花雀稗产草量的影响以有机肥最大，其次为N肥和K肥，影响最小的为P肥。其中，尿素用量在388．5～423．0kg／hm^2、钙镁磷肥用量在379．5-439．5kg／hm^2、硫酸钾用量在169．5～198．0kg／hm^2、有机肥用量在29509．5～32895．0kg／hm^2时，毛花雀稗产量大于48750．0kg／hm^2，为较适宜的处理组合。The trial of effects of N,P,K fertilizers and manure on grass yields of Paspalum dilatatum was carried out by using the quadratic regression combination designing. Mathematical models were established based on the test factors and production data. The results show that the main factor affecting the grass yields of Pas palum dilatatum was manure,then were N,and K,the last affecting factor was P. Among them,when urea was at 388.5-423.0 kg/hm^2 ,Ca,Mg and P at 379.5-439.5 kg/hm^2 ,K2SO4 at 169.5-198.0 kg/hm^2 and manure at 29 509.5- 32 895.0 kg/hm^2 , then the produltion of Paspalum dilatatum could reach to 48 750.0 kg/hm^2. This would be the suitable combination.

关 键 词：毛花雀稗 施肥水平 产草量 

分 类 号：S543.06[农业科学—作物学]