在适时冬灌的基础上,春季地温是影响小麦生长的主导因素。我县小麦产区历来有浇返青水的习惯,但浇返青水,能使麦田升温还是降温,能促苗早发还是控苗旺长,至今看法尚不一致。现将我们 1966、1977年春在冶源水库灌区的教场第八生产队、城关公社青年山大队农科队和县农科所,分别用水库水、机井水和河水灌溉麦田的地温变化简报如下。 On the basis of timely winter irrigation, the spring ground temperature is the dominant factor that affects wheat growth. My county wheat producing areas have always had the habit of pouring green water, but pouring green water, wheat fields can make warming or cooling, can promote seedling or control seedling long, so far the view is not consistent. Now we spring 1966, the spring of 1977 in the Yeyuan Reservoir Irrigation District eighth production team, Chengguan commune Youth Hill Brigade Agricultural Team and the county agricultural science, respectively, with the reservoir water, irrigation water and river irrigation wheat field briefing as follows .