一、除草当幼苗长到4～6片真叶时定苗,株距5～10厘米,油用红花每667米2保苗2.5～3.0万株,花用或油花兼用品种667米2保苗2.0～2.5万株。红花根系发达,早期重点抓好中耕,一般生育期须中耕2～3次,最后1次在伸长期进行,结合培土,以利灌水。根据田间杂草发生情况,株间人工除草 First, weeding When the seedlings grow to 4 to 6 true leaves Dingmiao, spacing 5 to 10 cm, safflower per 667 m 2 seedlings 2.5 to 30,000 strains of flowers or flowers spent both 667 m 2 seedlings 2.0 ~ 25000 strains. Safflower roots developed early focus on cultivating, the general growth period to cultivate 2 to 3 times, the last one in the elongation phase, combined with earthwork to facilitate irrigation. According to the occurrence of field weeds, artificial weeding between plants