论文部分内容阅读
为了弄清苹果树叶片光合强度、土壤温度和辐射强度三者间的相互关系,我们对容器内栽培的一年生安东诺夫卡苹果和同一品种的田间成龄树进行了专门试验。生长期内容器中土壤湿度分别保持在田间最大持水量的90%、70%、50%和30%。对田间栽植的成龄树,在7月盛暑天气时,不论土壤湿度条件,每株均灌水150升:对不进行灌水的对照树,则在正午时刻每隔0.5至1小时,喷树冠10分钟。试验结果表明,当田间持水量为90%和60%时,叶片的光合强度比持水量为70%时分别低50～60%和40～45%;持水量为30%的光合强度最低,比持水量70%的低86～98%。
In order to find out the relationship between the photosynthetic intensity, the soil temperature and the radiation intensity of apple tree leaves, we conducted a special experiment on the annual Anandanov card apple cultivated in the container and the same variety of field aged trees. During the growth period, the soil moisture in the container was kept at 90%, 70%, 50% and 30% of the maximum water holding capacity in the field respectively. For mature trees planted in the field, 150 liters are irrigated per plant regardless of soil moisture conditions during the hot summer months of July. For control trees not to be irrigated, trees are sprayed for 10 minutes at noon, every 0.5 to 1 hour . The results showed that when the water holding capacity was 90% and 60%, the leaf photosynthetic intensity was 50-60% and 40-45% lower than the water holding capacity of 70% respectively. The photosynthetic intensity with the water holding capacity of 30% Low water holding capacity of 70% 86 ~ 98%.