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一、用好拔节肥水促大蘖小麦拔节期生长旺盛,对水分及养分的需求量急剧增加,适量的肥水供应可提高成穗、整齐度,增加亩穗数;可有效减少不孕小花,提高穗粒数;能够延缓后期叶片和根系衰老,提高粒重;可促进中上部节间伸长,形成合理株形和大穗。1、春季墒情好、苗壮、尚未追肥浇水的麦田,应在拔节期前后浇第一水,并随浇水追施氮肥。拔节期肥水的时间,应掌握瘦地、弱苗宜早浇,肥地、壮苗宜晚浇的原则。追氮肥量要与底施氮肥
First, make good use of fertilizer to promote the growth of tillering wheat tillering stage, the demand for water and nutrients increased sharply, the appropriate amount of fertilizer can increase the spike, uniformity, increase the number of acres of spikes; can effectively reduce the fertility floret, increase Spike grain number; can delay late leaf and root senescence, improve grain weight; can promote the middle of the internode elongation, the formation of a reasonable plant shape and large ears. 1, spring moisture, well-sprouted, not yet topdressing wheat fields, watering should be poured before and after the first join the water, and with the topdressing of nitrogen fertilizer. Jointing fertilizer time, should be thin, weak seedlings should be poured as early as possible, fat, strong seedlings should be poured late principle. Top Nitrogen fertilizer and nitrogen fertilizer at the end