If the soil is too dry, it will soak up all of the water that is in the bottle. If the soil is dry, water it now. A wine bottle will be ideal, because it will be large enough to water 4 to 6 square feet (0.38 to 0.56 square meters) for up to 3 days. If you don't need to water such a large area, you can use a smaller bottle, such as a soda or beer bottle. Alternatively, you can also use a store-bought watering globe or aqua globe. Don't fill it all the way; just up to where the neck starts will be plenty. At this time, you can also add additional items, such as liquid fertilizers. Use your thumb to plug the hole in the mouth of the bottle when you flip it over. Position the bottle right next to the plant you need to be watered. As you’re pushing the neck into the soil, move your thumb out of the way. Make sure that the bottle's neck is several inches in the soil. It's okay if the bottle leans to the side, but it should be sturdy and secure. If the water is not draining at all, the soil might be clogging the bottle. If this happens, take the bottle out of the soil, clean it, and glue a piece of screening over the mouth. Refill the bottle, and insert it into the soil again. Draw a line on the bottle with a permanent marker, right at the water level. Check back after a few hours (or even a whole day). If the water level is below the line you drew, the water is draining properly. If the water level has not changed, something might be blocking it.

How would you rephrase that briefly using Vietnamese?
Đảm bảo tưới đẫm nước vào đất. Tìm một chai nước có cổ hẹp. Rót nước vào chai, dùng ngón tay cái bịt miệng chai và lật ngược lại. Cắm cổ chai nước vào đất. Đảm bảo nước trong chai chảy ra đúng mức.