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种子的寿命是采种、用种单位所共同关心的问题。种子的寿命愈长,在农业上使用的年限也愈久,而每次用于良种繁育所耗费的人力、物力也愈经济;同时在播种与收获过程中所造成的混杂与错误也愈少。 种子寿命是指整个种子群体的生活力已显衰退,而其中半数(即50％)已完全丧失生活力所经历的时间。也指种子在一定的贮藏条件下能够保持其生活力所能达到的平均年限。因此,当时间、地点及各种环境因素发生改变时,种子的寿命也就随之发生改变。 种子寿命的长短取决于植物本身的遗传性和种子生产的生态条件及采收、脱粒,干燥、害虫、贮藏过程中所受的影响。 长命种子:甜瓜、西瓜、茄子、番茄等。
Seed life is seed collection, common problem with the type of units. The longer the seed’s life span, the longer it will be used in agriculture and the more economical the manpower and material resources spent on the breeding of breeding seeds. At the same time, there will be less confusion and mistakes in sowing and harvesting. Seed life is the time when the viability of the entire seed population has receded, half of which (50%) have completely lost their viability. Also refers to the seeds in a certain storage conditions to maintain their viability can reach the average life expectancy. Therefore, when the time, place and various environmental factors change, the life expectancy of the seeds will change accordingly. Seed life depends on the length of the plant’s genetic and seed production of ecological conditions and recovery, threshing, drying, pests, storage process affected. Long-life seeds: melon, watermelon, eggplant, tomatoes and so on.