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对枣树不同器官抗风力的年变化和日变化及影响枣树抗风力的因素进行了研究。结果表明,在一年中以休眠期抗风力最强,依次为果实生长期、花期,果实着色成熟期抗风力最弱(风速15~20m·s-1,持续8min,落果率达到20%~30%);在一天中,以凌晨至日出前抗风力最弱,中午前后最强;在各器官中以枣吊抗风力最强,依次为叶片、幼果、鲜花、成熟果实和发育不良的花果;枣树抗风能力还受品种、树龄、整形方式、栽植密度、结实量以及地理环境等的影响。在整个生长季,4级(6m·s-1)以下的风对枣树各个器官都是安全的
The annual variation and diurnal variation of wind resistance and the factors that affect the wind resistance of jujube trees were studied. The results showed that in the year of dormancy, the strongest wind-resistance was the weakest in the fruit growth, flowering and fruit coloration (wind speed 15-20m · s-1 for 8min, fruit drop rate 20% 30%). In one day, the weakest wind force was weakened from morning till sunrise, and strongest before and after noon. In all organs, the wind resistance was the strongest among the organs, which were leaves, young fruit, flowers, mature fruit and stunting Of the flowers; jujube wind resistance is also affected by species, age, plastic mode, planting density, the amount of solid and geographical environment. Throughout the growing season, winds below grade 4 (6m · s-1) are safe for all organs of jujube trees