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为了促使玉米开花授粉和子粒灌浆良好,做到丰产丰收,玉米开花灌浆期应采取以下的田间管理措施: 一、补施粒肥在玉米吐丝期,如发现果穗以下4片绿叶有褪绿早衰现象时,应及时补施粒肥。粒肥的施用量不宜过多,以免造成玉米贪青晚熟。如果地为肥沃,基肥足,植株生长正常,一般可少施或不施粒肥;如果地力瘠薄,施量很少,植株发黄,有脱肥表现时,可每亩追施硫酸铵4—5公斤。二、花期灌水在玉米开花期合理灌水,可提高玉米的结实率,促进养分运转,保证子粒饱满,提高玉米的品质产量。试验表明,在玉米开花灌浆期适时合理灌水,可使玉米增产23%左右。
In order to promote the flowering of corn pollination and grain filling well and achieve high yield harvest, corn flowering filling period should take the following field management measures: First, fill grain fertilizer in the corn silking stage, if found below the ears 4 green leaves have chlorotic premature decline phenomenon When, should promptly fill grain fertilizer. Fertilizer application should not be too much, so as to avoid corrupt young corn. If the land is fertile, enough basal fertilizer, plant growth is normal, generally less or no application of grain fertilizer; if fertility is infertile, the amount of application is small, the plant yellow, with the performance of the removal of fertilizer, topdressing ammonium sulfate per acre 4-5 kg. Second, flowering In the flowering of corn reasonable irrigation, can improve the corn seed setting rate, promote nutrient operation, to ensure full grain, improve the quality of corn yield. Tests show that in the flowering and filling of corn timely and reasonable irrigation, can increase corn yield about 23%.