播种量对白马牙玉米产量的影响

EFFECTS OF SEEDING RATES ON FORAGE YIELD OF WHITE HORSE TOOTH MAIZE

研究了西宁地区白马牙玉米不同播种量对植株密度及产量的影响.试验结果:在播种量为4.5,9.0,13.5,18.0g/m^2,行距为60cm下点播,乳熟期收割时植株密度分别为8.3,14.1,29.8,38.9株/m^2,差异极显著,鲜重分别为7.0,10.1,14.2,13.9kg/m^2,以播种量13.5g/m^2的鲜重产量最高,与4.5,9.0g/m^2间差异极显著.

The experiment was conducted to study the effects of seeding rates on plant density and forage yield of White Horse Tooth maize (Zea mays L)in Xining. The results in-dicated that the plant densities (8.3,14. 1,29.8 and 38.9 plants/m^2,respectively)were signifi-cantly different when maizes were dibbled at the seeding rates of 4.5.9.0,13.5 and 18.0g/m^2 with 60cm inter-row spacing. The fresh yields harvested at the milk-ripe stage were 7.0,10.1,14.2 and 13.9 kg/m^2,respectiveiy,in which the seeding rate of 13.5g/m^2 had the highest yield which was significantly different from seeding rates of 4.5 and 9.0g/m^2.