洋葱种子产量不高,是当前洋葱生产中存在的问题之一。必须注意改进洋葱留种技术,以提高洋葱种子产量。要做好如下几点: 一、选用优良品种 除要选用适合当地自然条件、优质高产的优良品种外,还应在洋葱大田生产全过程中,留心观察、选择具有本品种优良特征、特性、生长健壮、无病害的植株,做好标记。当地上植株开始老黄倒伏后,连根拔起,进行贮藏,备做种用。 Onion seed production is not high, is currently one of the problems in onion production. Attention must be paid to improving onion seed-keeping techniques to increase onion seed yield. To make the following points: First, the selection of fine varieties In addition to the selection of local natural conditions suitable for high quality and high yield varieties, but also in the onion field production process, be careful to observe, choose to have the varieties of fine characteristics, characteristics, growth Robust, disease-free plants, well marked. After the local plant began to fall yellow, uprooted, for storage, ready to use.