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2014~2015年在京郊开展多点联合试验,探测与集成玉米晚春播高产稳产实用配套技术。试验结果揭示,晚春播玉米生育需水临界期与天然降雨耦合性好,其穗粒数、千粒重和产量水平与传统适期春播无明显差异;品种间植株致倒推力存在显著差异,参试品种实施晚春播,抗倒伏能力均减弱,最高比传统适期春播减弱约20%;京农科728品种植株抗倒伏力强,灌浆速率快,籽粒饱满度好、成熟早,适宜用于京郊晚春播技术。
2014-2015 in the suburbs of Beijing to carry out more joint test, detection and integration of late spring corn sowing high-yielding practical supporting technology. The results showed that the late spring sowing maize water critical period of critical coupling with the natural rainfall, the grain number per spike, grain weight and grain yield level and the traditional spring sowing no significant difference; varieties of plants caused by the thrust reversal significant differences, the test varieties In late spring planting, the ability of anti-lodging was weakened, the maximum was weakened by about 20% than that of the traditional suitable spring sowing date. The varieties of plants of Jingnong 728 had strong lodging resistance, fast grain filling rate, good grain fullness and early ripeness, Spring sowing technology.