早熟高产优质水稻新品种龙粳22的特征特性及栽培要点探讨

目的]为龙粳22的推广种植提供理论依据。方法]通过比较龙粳22和对照品种的生长、品质、抗病、抗冷指标,探讨了龙粳22的生产潜力和推广价值。结果]龙粳22主茎11片叶,生育期130d左右,需≥10℃活动积温2300℃左右;幼苗长势强,秆强抗倒,耐寒;3年区域试验平均产量8.37t/hm2,比对照品种增产4.0%;生产试验平均产量9.53t/hm2,较对照品种平均增产9.0%;米质优良,各项指标均达国家优质米标准。结论]龙粳22熟期早、产量高、米质优,在黑龙江省第3积温带具有较好的推广应用前景。

Breeding Report on Early Maturity, High Yield and High Quality Rice Varity Longjing22

Objective] The purpose was to supply theoretical basis for the popularization and cultivation of Longjing 22.Method] Through comparing the growth,quality,disease and cold resistance indices of Longjing 22 and control variety,the production potential and popularization value of Longjing 22 were discussed.Result] The number of Longjing 22's leaves on main stem was eleven,maturation period was 130 d and active accumulated temperature was 2 300 ℃(≥10 ℃).It had quite healthy seedlings and strong resistance to lodging and frost.In the regional tests in 3 years,its mean yield being 4.0% higher than that of control variety was 8.37 t/hm2.In the production test,its mean yield being 9.0% higher than that of control variety was 9.53 t/hm2.It had good quality and all kinds of indices met the national standards for high quality rice.Conclusion] Longjing 22 had early maturity,good quality and high yield,so it has better popularization potential and application foreground in the Third Accumulative Temperature Belt of Heilongjiang Province.