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玉米是生产上利用杂种优势最早最广泛的农作物之一,利用杂交种优势已经成为提高玉米产量和改善玉米品质的一项重要措施。近年来,随着玉米新品种的发展和玉米生产水平的提高,对玉米杂交种的质量也提出更高的要求。玉米杂交种的质量主要从种子纯度、发芽率、水分、净度四个方面来衡量,因此,为进一步提高玉米杂交种质量,在收获与贮藏期间采取的主要措施是:
Corn is one of the earliest and most widely used crops in the production of heterosis. The utilization of hybrids has become an important measure to increase corn yield and improve corn quality. In recent years, with the development of new maize varieties and the improvement of corn production, the quality of maize hybrids has also been put forward higher requirements. The quality of maize hybrids is mainly measured from four aspects of seed purity, germination rate, water content and clarity. Therefore, in order to further improve the quality of maize hybrids, the main measures taken during harvest and storage are as follows: