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Jonathan Lynch envisions a second Green Revolution

EarthSky

In order to feed billions of people on Earth today – and the billions more expected by 2050 – we need a second Green Revolution. That’s according to Dr. Jonathan Lynch, professor of plant nutrition at Penn State. He explained that the Green Revolution of the 1960’s was spurred by agricultural advances.

來自賓夕尼利亞的植物營養(yǎng)學教授喬納森?林奇博士說，今天地球上有幾十億人口，2050年會有更多人口，要養(yǎng)活這么多人，我們需要開始二次綠色革命。他表示農業(yè)進步是20世紀60年代的綠色革命的導火線。

Jonathan Lynch: The first Green Revolution was using fertilizers and irrigation to improve yields.

納森?林奇:第一次綠色革命是利用化肥和灌溉技術提升糧食產量。

Lynch said the second Green Revolution can’t depend on irrigation or fertilizer. He said that’s because many farmers in developing countries can’t afford either. To grow more food under tough conditions affordably, Dr. Lynch said, we’re going to have to breed plants with improved roots.

林奇說二次綠色革命不能再依靠灌溉和化肥了，因為發(fā)展中國家很多農民仍用不起這些。為了在現(xiàn)有的艱苦條件下提高產量，我們需要培育根莖更優(yōu)良的植物。

Jonathan Lynch: The roots are the part of the plant that take up water and nutrients. So if you want a plant that is going to be better at getting water and nutrients, you’ve got to have better roots.

納森?林奇：植物根部發(fā)揮吸取水分和營養(yǎng)的作用。如果希望植物能更好的吸收水分和營養(yǎng)，根的品質也需提高。

Working with staple crops like beans and corn, Lynch identifies which root traits – like deep, or shallow -will help plants get the sustenance they need.

林奇博士研究了大豆和玉米等主要植物，確定如何選擇根品種（深根或淺根）更有利于植物吸收營養(yǎng)物。

Jonathan Lynch: For some nutrients like phosphorous which are in the top soil, we want shallow roots.

納森?林奇：為有效吸取表土磷等營養(yǎng)物，淺根更適合。

Lynch then collaborates with plant breeders. He said evidence suggests that just changing the seeds to varieties with improved roots can double or triple farmers’ yields.

林奇和植物育種工作者合作，證實了根特性改良的種子能使產量翻兩番或三番。

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