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我社麦田因去秋阴雨连绵,播期拉的较长,据1975年11月12日调查,9月底至10月15日前播种的,生长快,长势好,冬前已有适当分蘗;10月20日以后播种的,出苗慢,苗弱小,分蘖少,甚至尚未分蘗.加之,底肥施的少,整地播种质量差,加强春季田间管理显得十分重要.现提出返青至拔节期管理意见供参考.返青期到孕穗期小麦生长特点是,由冬季的下长上不长转化为上下一齐长出现新分蘗,叶片增多,茎秆伸长发粗,小穗分化,以营养生长为主,生殖生长同时进行并逐步转变到以生殖生长为主.拔节进入两极分化,需水、肥量最大,约占整个生长期的40～50%,所以从返青到拔节,供给小麦足够的水肥是争取穗多穗大的关键.
Due to the continuous rainy autumn weather and the sowing date, our wheat field grows fast, grows well and has suitable tillers before winter, according to a survey conducted on November 12, 1975 and sown from the end of September to October 15, October. 20 days after sowing, the emergence of slow, weak seedling, tiller less, or even not yet tillering.In addition, the end of the application of fertilizer less, sowing quality is poor, strengthening the spring field management is very important. The characteristics of wheat growth from booting stage to booting stage are that the young tiller grows long and does not change into a new tiller, the leaves grow more, the stem grows thicker and the spikelet grows mainly in vegetative growth and reproductive growth at the same time And gradually change to reproductive growth.Adjacent into the polarization, water, the largest amount of fertilizer, accounting for 40 to 50% of the entire growth period, so from the green to join, enough to supply wheat water and fertilizer for more panicle spike Big key.