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我县地处三熟制北边边缘地区,一年两熟与一年三熟并存。调茬时实行二年五熟者较多见。即大元麦(或绿肥)、早稻(或春玉米)、后季稻一年三熟→小麦、中稻两熟制。在此循环中,小麦的前茬往往以硬三熟的三熟制田块较多,形成晚茬小麦面积大。晚茬小麦往往产量较低,一般只有500斤左右。如何夺取晚茬小麦高产,已成为影响三熟制地区小麦大面积平衡增产的关键性问题。为此,我们从1979年秋播起进行了硬三熟晚茬小麦高产栽培试验,并取得了晚茬小麦亩产连续三年超800斤的好收成。
My county is located in the northern edge of the three cooked area, two crops a year coexist with three crops a year. Stubble implementation of two years five acquaintances more common. Named Tai Yuen Mai (or green manure), early rice (or spring corn), the latter three rice crops a year → three wheat, middle rice two cooked. In this cycle, the former crop of wheat is often harvested three hard-cooked plots more, the formation of late crop area of wheat. Late crop of wheat is often lower yield, usually only about 500 pounds. How to seize the late crop of high-yield wheat has become a key issue affecting the large-area wheat yield increase in the three-cropping system. To this end, we broadcast from the autumn of 1979 conducted a hard and cooked late crop high-yielding cultivation trials, and obtained late crop of wheat per mu for three consecutive years over 800 pounds of good harvest.