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+ | <p>Nematode has been up to over 5000 of 200 genus<sup><b><a href="#ref-1">[1]</a></b></sup>. Among them, over 100 species of nematodes are damaging the agricultural, forestal and economic crops of China who widely parasitize the roots, stems, leaves, flowers, buds and seeds of manifold plants, harming the development of agriculture and forestry seriously.</p> | ||
+ | <p>A newest research by USA indicates that the plant-parasitic nematodes damage leads to about 8 billion dollars’ losses to their croppers, which takes 12% of the whole value of the crop output. Meanwhile, according to incomplete statistics, the losses caused by paratrophy nematodes can reach 100 billion every year worldwide<sup><b><a href="ref-2">[2]</a></b></sup>. China’s researchers have done some relevant surveys as well, and according to incomplete statistics, 17 provinces such as Anhui, Hainan, Hubei, Gansu, Zhejiang and Fujian have reported root knot nematode disease once, among which the morbidity of some severe regions in Shandong province can up to 2/3<sup><b><a href="ref-3">[3]</a></b></sup>. Therefore we can note that plant-parasitic nematodes have brought out severe lost to global agriculture and forestry already.</p> | ||
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Revision as of 17:46, 14 September 2015
1. Bait
Nematode has been up to over 5000 of 200 genus[1]. Among them, over 100 species of nematodes are damaging the agricultural, forestal and economic crops of China who widely parasitize the roots, stems, leaves, flowers, buds and seeds of manifold plants, harming the development of agriculture and forestry seriously.
A newest research by USA indicates that the plant-parasitic nematodes damage leads to about 8 billion dollars’ losses to their croppers, which takes 12% of the whole value of the crop output. Meanwhile, according to incomplete statistics, the losses caused by paratrophy nematodes can reach 100 billion every year worldwide[2]. China’s researchers have done some relevant surveys as well, and according to incomplete statistics, 17 provinces such as Anhui, Hainan, Hubei, Gansu, Zhejiang and Fujian have reported root knot nematode disease once, among which the morbidity of some severe regions in Shandong province can up to 2/3[3]. Therefore we can note that plant-parasitic nematodes have brought out severe lost to global agriculture and forestry already.