大棚冬莴苣低温冻害指标及预测

Low Temperature Damage Indicators and Forecasts of Winter Lactuca sativa var. angustana in Greenhouse

针对大棚莴苣(Lactucasativa L.var.angustana)冬季生长不完全闭膜的特点,开展了大棚冬莴苣小气候观测,分析了影响大棚冬莴苣生长的主要低温冻害指标,研究了不同天气条件下大棚内最低气温和地温与外界最低气温之间的关系,建立了棚内最低气温、地温的预测模型。

Microclimate observation of winter Lactuca sativa L.var.angustana was conducted based on the characteristic of incomplete covering during the growth period of winter L.sativa var.angustana.The relationship among the inner minimum temperature,the ground temperature and the outward minimum temperature under different climatic conditions were studied.The forecast models of the ground temperature and the inner minimum temperature was established.