"Human activities, such as monocultural farming practices, use of Broad-spectrum pesticides, and introduction of exotic species, often result in the proliferation of pest species."

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"Human activities, such as monocultural farm ing practices, use of broad-spectrum pesticides, and introduction of exotic species, often result in the proliferation of pest species."

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"Human activities, such as monocultural farming practices, use of broad-spectrum pest icides, and introduction of exotic species, often result in the proliferation of pest species."

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Multiple cropping; multicroppingGrowing two or more crops in the same year on the same field.

在同一地塊上免费看黄网站9，一年種植兩茬種或兩茬以上作物的耕作方式好男人社区WWW资源。

Multiple cropping is an important mean for increasing regional grain output and also a crucial cropping pattern in China's farming system.

復(fù)種是區(qū)域糧食增產(chǎn)的重要途徑之一，也是中國(guó)糧食生產(chǎn)中一種重要的耕作模式国产无码一级视频。

Multiple cropping system is a special characteristic of agriculture in China, which has crucial function on feeding 22% people of the whole word by 10% cultivate field of the whole world.

中國(guó)農(nóng)業(yè)能以占世界 10%的耕地養(yǎng)活世界上 22%的人口涩涩视频一区二区三区，多熟種植起著決定性的作用。復(fù)種指數(shù)作為耕地耕作能力的主要指標(biāo)以及氣候農(nóng)業(yè)生產(chǎn)模型中的必需變量免费在线视频网站，一直是基于行政單元的統(tǒng)計(jì)操到喷水视频，存在較多的問(wèn)題国产一级精品毛片性色AV大片，不易于評(píng)價(jià)與研究。

Because of its extensive cultivation and tendency to become naturalized in disturbed habitats, its original wild distribution is uncertain.

因?yàn)樗膹V泛的耕作和在擾亂的棲息地里成為歸化的趨勢(shì)

To put the conservation tillage in practice in northeaster area of China and to realize the purpose of protecting water, soil, fertilizer and environment in dry farming and to speed the persistent development of agriculture .

為了在東北地區(qū)推廣應(yīng)用保護(hù)性耕作一级二级片，實(shí)現(xiàn)旱區(qū)農(nóng)業(yè)四保(保水成年网站免费进入污，保土，保肥人人干人操，保護(hù)環(huán)境)把女人弄爽特黄a大片APP、促進(jìn)農(nóng)業(yè)可持續(xù)發(fā)展。

To put the conservation tillage in practice in Northeaster n Area of China and to realize the purpose of protecting water, soil, fertilizer and environment in dryfarming and to speed the persistent development of agriculture.

為了在東北地區(qū)推廣應(yīng)用保護(hù)性耕作乱伦图片视频一区二区三区，實(shí)現(xiàn)旱區(qū)農(nóng)業(yè)四保(保水亚洲中文字幕强，保土，保肥华人在线观黄色视频，保護(hù)環(huán)境)黄色电影手机在线视频、促進(jìn)農(nóng)業(yè)可持續(xù)發(fā)展。

Villagers who rely on opium poppy cultivation have accused Western forces of deliberately planting diseases to wipe-out the plant.

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