知识与财富的链接
研究杂交玉米品种京科25的氮、密效应对产量等的影响。结果表明,密度过高严重影响植株发育和产量。通过增加施肥量、提高肥力水平可有效地缓解密度压力。在中高肥力的情况下施氮量为225kg/hm2、密度为60000株/hm2的处理可充分发挥京科25株型半紧凑的特点,对单株产量及其它相关性状十分有利,达到针对性施肥、有效管理和减少投入。
Hybrid maize variety Jingke 25 was tested in four N and five planting density to study the variation on N and planting density combination.The results showed that there was significant difference on plant growth and yield among different planting densities,and counteracted effect by high planting density through increased quantity of N fertilizer.The optimal planting density on medium and fertility soil was 60 000 plants/ha,and the optimal quantity of N 225 kg/ha.
