１９９９年１２月２１－２３日，我县赤岭畲族乡遭受到３０多年罕见的特大燥冷型辐射冻害，造成该乡９０％以上的荔枝、龙眼树受冻，损失严重。然而，在此次冻害防范措施上，我们对该乡农技站１９９９年１１月下旬至１２月上旬集中移植的３万株荔枝、龙眼嫁接苗木，采用白炽光? From December 21 to December 23, 1999, the She ethnic township in Chiling county of our county suffered rare extra-heavy cold radiation damage for more than 30 years, causing over 90% of lychee and longan trees in the town to suffer freezing and suffered serious losses. However, in the prevention measures against frost damage, we planted 30,000 lychees and longan-grafted seedlings that have been transplanted from late November to early December 1999 in the township agricultural technology station using incandescent light.