小麦是北方地区国营农場的主要粮食作物,机械化程度也比較高,大部分农場都采用机器播种和机器收获。但过去往往产生康拜因直接收获的小麦种子发芽率下降的現象,例如一九六二年河南黄泛区农場康拜因直接收获的部分小麦种子发芽率只有百分之六十至百分之七十;北京农业大学实驗站繁殖的小麦良种“农大311”,采用康拜因收获发芽率 Wheat is the staple foodstuff of state farms in the north and has a high degree of mechanization. Most farms use machine sowing and machine harvesting. However, in the past, the germination rate of wheat seeds directly harvested by Kang Bain had been reduced. For example, the percentage of germination of some directly harvested wheat seeds from Kangbayin Farm in the Yellow River in Henan Province in 1962 was only 60% to 100% Of the seventy; Beijing Agricultural University Experimental Station breed of wheat “Nongda 311”, the use of Kang Baine germination rate