河北省地方水（陆）稻品种耐逆性研究

对河北省地方水(陆)稻品种耐逆性进行了鉴定,并在此基础上分析了耐寒性、耐旱性、耐盐性种质分布情况。对耐性频度较高的耐寒性、耐旱性从水、陆稻,熟期,不同稻作区等方面进行了详细研究。结果表明:耐寒、耐旱品种频度高、强度大,耐寒品种高达86.44%,高耐率23.53%;耐旱品种为48.77%,高耐率31.65%;耐盐性品种仅为6.46%,并且无高耐性和耐性品种。耐寒品种频度水稻高于陆稻,各熟期类型分布频度接近,随纬度增加、经度西移和温热条件降低而增加;耐旱性品种频度和强度均是陆稻高于水稻,早稻早熟耐性频度最高,其余熟期比较接近,河北省东北地区高,西北及冀中库淀地区低。

Study on Stress Tolerance of Lowland and Upland Rice Varieties in Hebei Province

The distribution of lowland and upland rice varieties in Hebei Province tolerance to cold, drought and salt was analyzed on the basis of stress tolerance identification, and the detailed study on cold tolerance and drought tolerance which showed higher tolerant frequency was conducted in lowland and upland rice, maturity, rice growing region etc. The result showed that the cold tolerant and drought tolerant varieties had higher frequency and strength, the cold tolerant varieties was up to 86.44%, high tolerant rate was 23.53%, the drought tolerant varieties was 48.77%, high tolerant rate was 31.65%, the salt tolerant varieties was only 6.46%, no varieties showed high tolerance and tolerance. The frequency of cold tolerant varieties in lowland rice was higher than that in upland rice, and the frequency in different maturity types was close to each other, and the frequency increased with the increase of latitude, westward of longitude and decrease of temperature. The frequency and strength of drought tolerant varieties in upland rice were all higher than in lowland rice, early season rice with early maturity had the highest tolerant frequency, other maturity types were relatively close to each other, the northeast region of Hebei was high, the northwest and central region of reservoirs and shallow lakes was low.