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适时间苗、定苗胡萝卜苗期应及时做好间苗定苗工作,以免互相争夺养分,导致生长瘦弱。间苗宜在1~2片叶时进行,苗距2~3厘米,注意拔除病苗、弱苗、虫苗,并在行间进行浅中耕、除草、松土,促使幼苗生长;定苗在4~5片叶时结合中耕除草进行,苗距一般为10~17厘米,注意去弱留壮,尽量保留生长健壮的优质苗。生产中,间苗和定苗一定要分两次进行,切忌一次性间苗定苗。另外注意留苗密度要适宜,过稀容易造成心部粗大、表皮粗糙、裂根增多,过密则容易
Time for Miao, Dingmiao carrot seedling should be promptly Miao Miao Dingmiao work, so as not to compete for nutrients, leading to emaciation. Seedlings should be in 1 to 2 leaves, seedling spacing of 2 to 3 cm, pay attention to remove the disease, weak seedlings, insects, and in the line of shallow cultivation, weeding, loosening, prompting seedling growth; Dingmiao in 4 ~ 5 leaves with weed cultivation, seedling spacing is generally 10 to 17 cm, pay attention to weak to stay strong, try to retain the growth of robust high-quality seedlings. Production, Miao Miao and Dingmiao must be carried out in two separate, avoid disposable Miao Miao. Also note that the density should be appropriate to stay seedlings, too thin can easily lead to heart thick, epidermal rough, cracked roots more dense is easy