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优良的花生品种,经多年种植,由于人为的机械混杂、不良环境影响或天然杂交,会分离出不同类型,造成混杂退化,逐渐失去良种优良特性。因此,在生产上应重视品种防杂保纯,比较常用的方法有以下几种: 1.株选法 秋收前,在一般生产田(最好在单粒播种的丰产田里)按本品种的特征特性,选择无病虫害,长势适中的优良单株,提前起收,单独晾晒,混合脱果,妥善保管,第二年做种用。株选的数量要根据第二年的种植面积大小确定。留种量要比播种数量多出三分之一左右。
Fine peanut varieties, after years of planting, will be separated into different types due to man-made mechanical confounding, adverse environmental impact or natural hybridization, resulting in mixed degeneration and gradually losing the fine characteristics of the good seed. Therefore, the production should pay attention to varieties of hybrid pure, the more commonly used methods are the following: 1. Plant selection method Before harvest, in the general production of the field (preferably in the sowing of a single crop of high yield) according to the species Characteristics of characteristics, the choice of no pests and diseases, growing moderately fine single plant, in advance from the collection, drying alone, mixed off fruit, safekeeping, the next year to do kinds of use. The number of strains selected according to the size of the second year of planting area to determine. The amount of seed to be planted more than about one-third of the number.