(二)移栽技术1.适期移栽我省棉花育苗移栽,是在春季温度较低和不稳定的情况下进行的.据河南农学院观察,当5厘米地温低于15℃时,棉苗发根十分缓慢;地温为17℃时,一般移栽后需要三、四天才能发出新根;地温达19℃以上时,只要一、二天即可发出新根.若移栽后温度降低到12℃以下时,不仅新根增长停滞,甚至还会造成棉苗落叶,茎秆变红,缓 (B) transplanting technology 1 transplanting cotton transplanting in our province transplanted in spring is in the spring under the conditions of low temperature and instability.According to Henan Agricultural College observation, when the 5 cm below 15 ℃, Cotton seedling hair root is very slow; ground temperature is 17 ℃, the general transplanting takes three or four days to issue new roots; ground temperature reaches above 19 ℃, as long as one or two days to issue a new root .If the temperature after transplanting is reduced To 12 ℃ below, not only the growth of new roots stagnation, and even cotton leaves will cause decay, stalks turn red, slow