应用遮光的方法来缩短光照，达到提前开花的目的。
Use the method of application of sunscreen to reduce the light, and to achieve the objective of early flowering.
遮光胶纸(红胶纸)：在菲林片上，遮盖保护范围用的半透明但遮光的红色有粘性胶带。
Masking tape: a translucent, light-blocking red adhesive tape for masking out the protected areas on film.
就个人而言，仅在必要时使用照明，且选择遮光性能好的照明设备，就能有助于大幅减少人工白昼现象。
On an individual level, people can help reduce much sky glow by using lighting only when necessary and by choosing well shielded lighting fixtures.
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