【摘 要】
：
油菜是我市主要油料作物之一,近几年的种植面积一直稳定在20万亩左右。由于本地区春季和秋季光照充足、温度适宜和雨水均匀,因此亩产油菜籽200～250公斤的田块屡见不鲜。但因
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油菜是我市主要油料作物之一,近几年的种植面积一直稳定在20万亩左右。由于本地区春季和秋季光照充足、温度适宜和雨水均匀,因此亩产油菜籽200～250公斤的田块屡见不鲜。但因冬季气候干冷,油菜冻害每年均有发生,轻则叶片受损,重则成片死亡,严重影响产量,所以1981年秋播以来,对油菜冻害的发生及防御进行了研究,结果如下:
Rape is one of the main oil crops in our city, and the planting area in recent years has been stable at around 200,000 mu. Due to abundant sunshine and fall in this region, the temperature is suitable and the rainfall is even, so plots of 200-250 kilograms of rapeseed per mu are not uncommon. However, due to dry and cold winter weather, rape frost damage occurs every year, ranging from leaf damage, weight is a piece of death, seriously affecting the yield, so since autumn 1981 broadcast, rape frost occurrence and defense were studied, the results are as follows:
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