He thought some kind of cover would keep rain away and the soil warm.

他想到某种遮盖物可以防水，并使壤保持温暖。

This ensures that the soil below stays warm enough for the microbes to remain active.

这确保了下面的壤保持足够的温暖让微生物保持活跃。

A five-centimeter layer of mulch will help the soil hold water and reduce competition from unwanted plants.

一层五厘米厚的覆盖物将会助壤保持水，并减少多余植物的竞争。

The webs of their roots protect against mudslides while allowing soil to retain water and filter out toxins.

其根部的网状结构可防止泥石流，同时使壤保持水并滤出毒素。

It keeps soil wet, limits the growth of weeds, and helps keep soil temperatures even.

它保持壤湿润，限制杂草的生长，并有助于保持壤温度均匀。

This aims to boost the fertility of soil and keep it moist through established practices.

这种方法目的在于通过既有的惯常做法，增加壤的肥力，保持壤湿度。

The soil should be kept moist but well drained so it does not get too wet.

壤应保持湿润，但要容易排水，这样就不至于水过多。

They focus on keeping their soil rich and free of disease.

农民关心的是保持壤肥沃并且免受病害。

Keep the soil wet but be careful to avoid washing away seeds.

保持壤湿润，但要小心避免把种子冲走。

Keep the soil wet, but not too wet, until the seeds begin to grow.

保持壤湿润，但不要太湿，直到种子开始生长。

This layer will help keep the soil cool and moist.

这一层覆盖物有助于保持壤凉爽和湿润。

Collingsworth says their soil should be kept slightly wet but not too wet.

科林斯沃斯说，这些植物所需的壤应该保持稍微潮湿，但不能太湿。

The soil for chrysanthemums should be kept moist but well drained so it does not get too wet.

栽培菊花的壤应保持湿润，但要排水方便，这样就不会太湿。

This creates space for plant roots to grow and keeps soil alive.

这为植物根系的生长创造了空间， 并使壤保持活力。

This keeps the soil wet longer and can help protect the water cycle when things get really dry during a drought.

这样可以让壤保持更长时间的湿润，并在干旱时期气候非常干燥时助保护水循环。

So that scientists can help millipedes keep the soil healthful, for them and for us.

这样科学家就能助马陆保持壤健康，这对它们和我们都有益。

They help keep water in the soil and feed microorganisms that help plants.

它们有助于保持壤中的水，并滋养有助于植物生长的微生物。

This can help keep plant roots cool and will preserve water, or moisture, in the soil.

这有助于保持植物根部凉爽，并能保持壤中的水或湿气。

After the seeds develop, apply mulch to retain water in the soil to keep the temperature even.

种子发育后，用地膜保持壤中的水，以保持温度均匀。

They help stabilize soil, retain moisture, and hang on to nitrogen.

它们有助于稳定壤、保持水并保持氮素。