CAJ | 학술논문

利用人工气候箱在晚稻抽穗初期进行低温控制试验，通过考察晚稻的抽穗进程、叶片叶绿素含量和稻谷空壳率的变化，研究了晚稻寒露风的气象灾害指标。结果表明：15～18℃处理1～3 d或19～22℃处理2～5 d对晚稻叶片的叶绿素含量无影响；遭受15～18℃1 d的冷害为轻度，15～18℃2 d以上的冷害为重度；19℃2 d以上的冷害为重度；20℃2～4 d的冷害为中度，20℃5 d以上的冷害为重度；21～22℃2～4 d的冷害为轻度，21～22℃5 d以上的冷害为重度。
이용인공기후상재만도추수초기진행저온공제시험，통과고찰만도적추수진정、협편협록소함량화도곡공각솔적변화，연구료만도한로풍적기상재해지표。결과표명：15～18℃처리1～3 d혹19～22℃처리2～5 d대만도협편적협록소함량무영향；조수15～18℃1 d적냉해위경도，15～18℃2 d이상적냉해위중도；19℃2 d이상적냉해위중도；20℃2～4 d적냉해위중도，20℃5 d이상적냉해위중도；21～22℃2～4 d적냉해위경도，21～22℃5 d이상적냉해위중도。
The meteorological indexes of cold dew wind injury to late rice were studied by treating rice plants at early heading stage with low temperature in artificial climate chamber , and by investigating the heading course , leaf chlorophyll content and rate of unfilled grains of the treated late rice in field .The results showed that 15~18℃treatments for 1~3 days or 19~22℃treatments for 2~5 days had no significant influences on the leaf chlorophyll content of late rice ;the cold damage caused by 15~18℃treat-ments for 1 day was slight , that did by 15~18 ℃treatments for 2 days or over 2 days was serious;the cold damage caused by 19℃treatments for 2 days or over 2 days was serious;that did by 20 ℃treatments for 2~4 days was moderate , by 20℃treatments for 5 days or over 5 days was serious , by 21~22 ℃treatments for 2~4 days was slight , and by 21~22 ℃treatments for no less than 5 days was serious .