A: Fahrenheit
B: equivalent
C: exhibition
D: fertilizer
举一反三
- which materials can be used to increase soil pH A: Ferrous sulfate B: Quick lime C: Plant ash D: Organic fertilizer
- Autogenous N-fixed bacteria have the ability to increase the N nutrient nutrients available for plants in the soil
- It is said that synthetic fiber (合成纤维) is not as good as natural fiber. Natural fiber is said to be __________ synthetic fiber. (superior)
- Fertilizers contain nutrients that are essential to plant growth. List the three nutrients that appear on the label of fertilizers:______ ______ ______
- Soil fertility is soil productivity, which refers to the ability of soil to produce plant products.
内容
- 0
Why is the natural gas kept in minus 260 degrees Fahrenheit?
- 1
The application of phosphate fertilizer in soil can enhance the mobility of arsenic, so enhance the bioavailability of arsenic.
- 2
Plant grows in the soil and is an autotrophic organism with cell walls.
- 3
They decided to _______ the soil to plant more flowers. A: dug B: dot C: dig
- 4
Of the following environmental<br/>problems, the one that does not belong to environmental pollution is<br/>( <br/>). A: The noise from the rolling<br/>mill spread to the nearby residential area B: Waste water from the<br/>nitrogenous fertilizer plant is discharged into a nearby river C: The waste gas from the coking<br/>plant is discharged into the sky D: Serious water and soil erosion<br/>in the Huangtu Plateau region