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1975年我队共移栽夏玉米28亩,亩产673～745斤,较直播的增产5.7～16.4％(每亩净增47～105斤),早熟15～20天。 (一)早熟高产原因分析: 移栽玉米由于提前育苗,生育期比移栽时直播的相应提早。但栽后还有一个缓苗阶段(从移栽到出新叶),生长受抑,发育停滞。因此移栽玉米早熟的天数大致相当于苗龄减去缓苗天数。5月15日育苗6月11日移栽的,苗龄26天,移栽后缓苗12天,9月18日成熟,比6月11日移栽时直播的早熟15天。移栽玉米缓苗天数与移栽技术关系很大,一般需10天左右,用25
In 1975, the team transplanted 28 acres of summer maize, 673 ~ 745 kg per mu, 5.7 ~ 16.4% more than direct seeding (a net increase of 47 ~ 105 pounds per mu), precocious 15 to 20 days. (A) Analysis of early maturity and high yield: Transplantation of corn as early nursery, growing earlier than the corresponding transplanting direct broadcast. But after transplanting there is a Huanmiao stage (from transplanting to a new leaf), growth inhibition, developmental arrest. Therefore, the number of days of transplanting corn precocious roughly equal to the number of seedlings minus the number of Hibin days. May 15 seedlings June 11 transplanting, seedling age 26 days after transplanting Huanmiao 12 days, September 18 maturity, than June 11 when transplanting live precocious 15 days. The number of transplanting corn seedling days and transplanting technology is very large, usually takes about 10 days, with 25