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1、苗床管理选择前茬米种过十字花科作物，土层深厚、肥沃、排人自怦的沙壤十作种苗田，每667平方米优质土杂肥1000～15O0公斤，过磷酸3O～4O公斤作基肥。以9月中、下旬播种较为适宜。一般667平方米播种量不超过1公斤。幼苗出土的后要及时间革，防止幼苗拥挤，做到早间苗，分次
1, seedbed management Select the crop of rice in the cross prior to the flowering, soil deep, fertile, row of self-pollinating ten for the seedlings of soil, fertilizers every 667 square meters of quality soil 1000 to 15O0 kg, 3O ~ 4O kg as a base fertilizer. In September, late sowing more appropriate. Generally 667 square meters of sowing no more than 1 kg. Seedlings after the time and time to leather, seedlings to prevent crowded, so early seedlings, graded