适时早播,提高甜菜产质量。在雨量、日照、正常的年景,甜菜播期应严格控制在4月15～30日,最晚不超过5月5日。抗寒性较差的遗传单粒种播期可控制在5月1～5日。在雨量较大、4月中下旬不能播种的特殊涝年,可以将播期推后,尽量抢在5月上旬播完。纸筒育苗移栽甜菜,能使生育期增加30～40天,提高 Timely sowing, improve the quality of sugar beet production. In the rainfall, sunshine, normal years, beet sowing should be strictly controlled in April 15 to 30, the latest no more than May 5. Cold hardiness genetic single seed sowing can be controlled in May 1 to 5. During the special flood years where the rainfall is heavy and can not be planted in the middle and late April, the sowing date can be delayed and sowing can be finished in early May. Paper tube seedlings planted sugar beet, can increase the growth period of 30 to 40 days, increased