首页Home › 常用计算器Everyday Calculators
🌱 施肥量计算器Fertilizer Calculator
按目标氮肥施用率和肥料养分含量，计算草坪或菜地需要多少肥料；也可反过来，由已知肥料用量算出实际施入的氮量。支持每 1000 平方英尺（lb）或每 100 平方米（kg）两种常用施用率。Work out how much fertiliser a lawn or bed needs from a target nitrogen rate and the product's nutrient content — or, the other way round, the actual nitrogen delivered by a known amount of fertiliser. Supports the two common rates: pounds per 1,000 sq ft and kilograms per 100 m².
使用说明与常见问题How-to & FAQ
「施肥量计算器」是什么？What is the Fertilizer Calculator tool?
按目标氮肥施用率和肥料养分含量，计算草坪或菜地需要多少肥料；也可反过来，由已知肥料用量算出实际施入的氮量。支持每 1000 平方英尺（lb）或每 100 平方米（kg）两种常用施用率。Work out how much fertiliser a lawn or bed needs from a target nitrogen rate and the product's nutrient content — or, the other way round, the actual nitrogen delivered by a known amount of fertiliser. Supports the two common rates: pounds per 1,000 sq ft and kilograms per 100 m².
如何使用「施肥量计算器」？How do I use the Fertilizer Calculator tool?
在「施肥量计算器」中，填写「计算方向」、「单位制」、「面积」、「目标氮施用率」、「肥料含氮量 N（%）」等参数，结果会随输入实时计算并显示在下方。In the Fertilizer Calculator: Fill in "Direction", "Unit system", "Area", "Target nitrogen rate", "Nitrogen content N (%)"; results are recalculated instantly as you type.
施肥量是怎么算的？How is the amount calculated?
先按施用率算出需要的纯氮：纯氮 = 施用率 × 面积 ÷ 基准面积；再除以肥料含氮量得到肥料用量：肥料 = 纯氮 ÷ (N% )。例如 5000 ft² 施 1 lb N/1000 ft²、肥料含 10% N，需要 5 lb 纯氮、50 lb 肥料。First find the nitrogen needed: nitrogen = rate × area ÷ base area; then divide by the nitrogen content to get the product: fertiliser = nitrogen ÷ (N%). For 5,000 ft² at 1 lb N/1,000 ft² with a 10% N product: 5 lb of nitrogen and 50 lb of fertiliser.
肥料标签上的数字是什么意思？What do the numbers on a fertiliser bag mean?
如 10-10-10 分别是氮(N)、磷(P₂O₅)、钾(K₂O) 的百分比。本工具用第一个数字（N%）计算；想按磷或钾施用，把对应百分比填到“含氮量”栏即可。A label such as 10-10-10 gives the percentages of nitrogen (N), phosphorus (P₂O₅) and potassium (K₂O). This tool uses the first number (N%); to apply by phosphorus or potassium instead, enter that percentage in the content field.
常见的氮施用率是多少？What is a typical nitrogen rate?
草坪常用每次 0.5–1 lb N/1000 ft²（约 0.25–0.5 kg N/100 m²），一年分几次施。请以你所在地区、草种或作物的建议为准，避免一次过量烧苗。Lawns commonly get 0.5–1 lb N/1,000 ft² (about 0.25–0.5 kg N/100 m²) per application, split over the year. Follow the advice for your region, grass or crop, and avoid over-applying at once, which can burn plants.
英制和公制怎么对应？How do imperial and metric compare?
英制按每 1000 平方英尺多少磅计，公制按每 100 平方米多少千克计。两者基准面积和单位都不同，请统一用同一单位制填写，不要混用。Imperial uses pounds per 1,000 square feet; metric uses kilograms per 100 square metres. The base area and units differ, so keep to one system and do not mix them.
「施肥量计算器」免费吗？需要注册吗？Is the Fertilizer Calculator free? Do I need an account?
「施肥量计算器」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The Fertilizer Calculator is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.