crop rotation

音標發(fā)音

Her results show that reducing emissions is more complicated than just cutting back on nitrogen fertilizers and changing crop rotation cycles.
她的研究結(jié)果表明，減少排放要比只是減少氮肥的使用和改變作物輪作周期復雜得多。
And no matter which tillage or crop rotation system was used, nitrous oxide emissions peaked during spring thaws when the sun’s rays began to warm the soil.
不管應用哪種耕作法或者作物輪作制度，在春雪融化時，也即太陽光開始把土壤烘暖時，一氧化二氮的排放量總是達到高潮。
They urged “a rapid shift, whenever and wherever conditions permit it, to management systems based on minimal soil disturbance, increased soil cover, and appropriate crop rotation”.
他們敦促，“無論何時何地，只要條件許可，應迅速向以最低限度干擾土壤，增加土壤覆被和適當?shù)淖魑镙喿鳛榛A的管理系統(tǒng)轉(zhuǎn)變”。

There is rarely crop rotation and soils are depleted after years of grain crops.
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Organic methods, which rely on crop rotation, manure and compost in place of fertiliser, are far less intensive.
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The other is that monoculture and less crop rotation risks exhausting the soil.
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a method of farming where a number of different plants are grown one after the other on a field so that the soil stays healthy and fertile (= able to produce crops)

the system of growing a sequence of different crops on the same ground so as to maintain or increase its fertility

輪作
Studies on flowering time may help breed varieties suitable to crop rotation and manipulate pollination control systems in hybrid breeding and production.
研究油菜開花時間多態(tài)性及相應控制基因有助于培育適應不同季節(jié)和輪作方式的品種。
環(huán)境科學技術
輪作
Nitrogen and phosphorus losses of surface runoff in various crop rotation systems in north of lake Erhai watershed were researched for the risk evaluation and putting countermeasures for the nonpoint pollution from agricultural source.
為明確洱海北部地區(qū)不同輪作模式下農(nóng)田氮、磷流失特性,客觀評價環(huán)境污染風險。
生物學
輪作