摘要
探讨光照强度与土壤水分变化对新疆野苹果种子实生繁殖的影响,搭建0、1、2、3和4层遮阳网的5个光照处理的遮阴棚,以透光率表示光照强度,分别为100%、41.67%、26.04%、9.21%、2.42%。设置土壤相对含水量分别为20%、35%、50%、65%和80%的5个水分处理,以2因素5水平的全区组排列试验,观测种子萌发、幼苗生长量与幼苗存活率。结果表明:不同条件的光照强度与土壤相对含水量的交互作用,对新疆野苹果种子萌发、幼苗生长与存活有显著影响;在所有光照处理下,35%~65%土壤水分适宜种子萌发;在光照强度降低至9.21%以下,土壤相对含水量小于50%和大于80%时,种子萌发和幼苗存活有显著抑制作用;多数幼苗各指标间呈显著与极显著相关。
To investigate the effects of light intensity and soil water on the seed growth and propagation of Malus sieversii.Set up 5 light-treated shade sheds with 0,1,2,3 and 4 layers of sunshade nets,and express the light intensity with the light transmission rate,which are 100%,41.67%,26.04%,9.21%and 2.42%,respectively.Five water treatments with soil relative water content of 20%,35%,50%,65%and 80%were set.The seed germination,seedling growth and seedling survival rate were observed by the whole area group arrangement experiment with 2 factors and 5 levels.The results showed that the interaction of light intensity and soil relative water content had significant effects on seed germination,seedling growth and survival of Malus sieversii.Under all light treatments,35%~65%soil moisture was suitable for seed germination.When the light intensity was lower than 9.21%and the soil relative water content was less than 50%and more than 80%,the seed germination and seedling survival were significantly inhibited.Under the optimum conditions of 100%light intensity and 65%soil relative water content,the seed germination rate and seedling survival rate of Malus sieversii were the highest.The increase of light intensity and soil moisture under a certain limit was beneficial to the growth of seedlings,and there were significant and extremely significant correlations among the indexes of seedlings.
作者
马悦
杨洋
郑凤
卿全
徐蕾
李建贵
刘立强
MA Yue;YANG Yang;ZHENG Feng;QING Quan;XU Lei;LI Jiangui;LIU Liqiang(Xinjiang Agricultural University College of Horticulture,Xinjiang Urumqi 830052)
出处
《林业科技》
2025年第4期1-6,共6页
Forestry Science & Technology
基金
新疆天然林保护修复资金项目(LYFZJJTB2021)
第三次新疆综合科学考察课题(2021xjkk0501)
新疆维吾尔自治区大学生创新训练项目(S202310758024)
新疆农业大学教研教改项目(2021ZLTS48)。
关键词
新疆野苹果
光照强度
土壤含水量
种子萌发
幼苗存活
Malus sieversii
light intensity
soil water content
seed germination
seedling survival
