从起身开始经过拔节、孕穗、抽穗到开花,是冬小麦生育的中期阶段,一般从4月上旬开始到5月中旬结束。在这个阶段中,小麦的茎、叶、穗、蘖等器官同时迅速生长,是小麦一生中发育最旺盛的阶段,是争取穗大粒多的关键时期。因此,中期田间管理的中心任务是供足肥水,保蘖增穗,保穗增粒,争取壮秆不倒,穗大粒多。一、合理运用肥水中期是冬小麦一生中 From the beginning through the jointing, booting, heading to flowering, is the mid-stage of winter wheat growth, usually from early April to mid-May the end. At this stage, the stems, leaves, spikes, tillers and other organs of wheat grow rapidly at the same time. It is the most vigorous stage of wheat growth and is the crucial period for obtaining large grains and spikes. Therefore, the central task of the mid-term field management is to provide sufficient fertilizer and water, maintain tillering and increase spike, spikelets and granule, strive for strong stems and not fall, spike and large grains. First, the rational use of fertilizer is the mid-winter wheat in the life