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冬性:某些越冬农作物或一种越冬农作物的品种,要在较低的温度下,经过比较长的时间渡过春花阶段(如小麦要求在0°～3°C的低温下,时间约为20～50天)这种作物或品种称为冬性作物或冬性品种。春性:通过春花阶段时,要求较高的温度和较短的时间的作物和品种,称为春性作物和春性品种。如春性小麦通过春花阶段时所需温度为5°～6℃,经过7～15天。春花阶段:是一、二年生种子植物个体发育必须具备的两个前提:第一、植物有机
Winter: Some winter crops or a variety of winter crops, at a lower temperature, after a relatively long period of time through the spring flower stage (such as wheat requirements at 0 ° ~ 3 ° C low temperature, time is about 20 to 50 days) This crop or variety is called a winter crop or a winter variety. Spring: The spring flowers through the stage, requiring a higher temperature and shorter time crops and varieties, known as spring crops and spring varieties. Such as spring wheat through the spring flower stage when the required temperature of 5 ° ~ 6 ℃, after 7 to 15 days. Spring flower stage: one or two year seed plant individual development must have two premises: first, plant organic