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冬小麦中低产麦田(亩产100—250公斤左右)春季第一水的适宜灌溉时期,在学术界看法不一。当前大多数意见:一般不主张灌返青水(5厘米地温4—6℃,在德州地区一般为3月上、中旬),而主张在起身、拔节时灌水(5厘米地温8℃和11℃,在德州一般为3月下旬至4月上旬),可一水两用。也有的坚持灌返青水,促穗多粒多。从小麦生产实践来看,灌水过早,主要影响地温的回升,从而影响小麦生长而减产。灌水过晚,由于水肥不足,影响小麦生长,同样减产。为此我们于1979—1984年连续六年进行了中低产麦田(包
Winter wheat in low-yield wheat (about 100-250 kilograms per mu) suitable for the first irrigation of spring irrigation period, in the academic opinion. Most of the current opinions: generally do not advocate irrigation green water (5 cm ground temperature 4-6 ℃, in Texas generally March, mid), and advocates in the up, jointing irrigation (5 cm ground temperature 8 ℃ and 11 ℃, In Texas, generally from late March to early April), water and water can be used. Some insist on pouring green water, spike more grain. Wheat production from the point of view, premature irrigation, mainly affect the rise of ground temperature, thus affecting wheat growth and yield. Irrigation is too late, due to lack of water and fertilizer, affecting wheat growth, the same cut. For this reason, we conducted mid-low yield wheat fields (1979-1984) for six consecutive years