不同施肥水平对玉米品质影响研究

Effects of Different Fertilizing on Levels Maize Quality

以玉米天池3号品种为对象,单作,按N∶P=1∶1和2∶1两种肥力配比,采用3种施肥梯度处理,不施肥为对照,在平地和坡地进行试验,分析其对玉米天池3号品质的影响。结果表明,不同种植地和不同施肥水平对天池3号淀粉含量的影响显著;N∶P=1∶1和2∶1两种肥力配比,在不施肥、低肥、高肥时,对平地和坡地玉米天池3号淀粉含量的影响表现为随施肥量的增加而增加,当施用特高肥且N∶P=1∶1时,淀粉含量增加明显,而在N∶P=2∶1的肥力配比时,施用特高肥时,淀粉含量表现为平地有减少、坡地有增加的趋势,因此,施肥的过程中要适度地控制N、P的比例。

The quality of maize Tianchi No.3, which was cultivated in flat and sloping fields under the conditions of three different fertilizing levels at a special ratio for nitrogenous fertilizer and phosphate fertilizer, was analyzed.The results showed that in flat and sloping fields, the significant difference had been found for starch content in maize Tianchi No.3 with different fertilizing levels, and the amounts of starch increased with increasing fertilizing levels at a ratio of 1∶1 or 2∶1 for nitrogenous and phosphate fertilizers, but at a ratio of 2 ∶1 for nitrogenous and phosphate fertilizers, with extra high fertilizer level, the amounts of starch was reduced.So appropriate ratio for nitrogenous and phosphate fertilizers was important for maize quality.