采用保水剂流体播种技术，解决了油菜适播期干旱不能一播全苗的问题，保证了油菜壮苗越冬。越冬至初花期单株叶片比对照多３．４～８．２片，茎粗比对照增加０．５４～０．６３ｃｍ，根条数增加２．５～２．８７条，根干重增加６５％～７９．２％，终花期根伤流量增加１３９０％～１４９．４％，且病害轻，三年平均增产２８．７％。生育期对５～１０ｃｍ土层土壤含水量测定，平均比对照提高１０％左右，保证了油菜正常生长 Adopting water retaining agent fluid sowing technology, the problem that the rape sowing can not sow the whole sowing seedling during sowing season can be solved, and the canola seedling is guaranteed to be overwintering. The number of leaves per plant was 3.4-2.2 more than that of the control at the beginning of flowering season, the stem diameter increased 0.54 ~ 0.63cm, the number of root increased 2.5 ~ 2.87, the root dry weight increased 65 % ~ 79.2%, the flowering rate of root flowering increased by 1390% -149.4% at the end of flowering period, and the disease was light with an average increase of 28.7% in three years. The soil water content of 5 ~ 10cm soil layer during growing period was increased by about 10% on average, which ensured the normal growth of rapeseed