Soil Nutrient Tester

Amherst, 美国 中的 实验室
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The UMass Clean Energy Extension provides a resource dedicated to reducing market barriers and accelerating the adoption of clean …

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常见问题解答

问:
If nitrogen is so important, why do I not see nitrogen results on my report?
答:
Plants absorb nitrogen as nitrate (NO3-) and ammonium (NH4+). Soil NO3- and NH4+ levels can fluctuate widely with weather and soil conditions...
数据来源: BusinessWebsite
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