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Investigation of main crop pests and their natural enemies resources has made important progress in
Turn: http://www.most.gov.cn/kjbgz/201405/t20140520_113295.htm
Technology infrastructure work projects, "the main crop pests and their natural enemies Resources Survey" (ID: 2013FY113200) project since the implementation of the past year, a large number of historical documents in the collection and collation of information on the basis of the relevant provinces (cities, districts) of the 50 cities 260 counties (cities) 1400 7000 township conducted a field survey samples were collected pests, weeds, rodents, predators sample of nearly 13,000 copies, Production samples of nearly 2,000, more than 3,000 photographs, DNA samples extracted save more than 600 copies, get a lot of first-hand raw data, made a number of new findings, such as:
??1 has been reported rarely found in the domestic silver Mao Longkui (Solanum elaeagnifolium) weeds (see Figure 1). The weed is native to the Americas, systemic toxic, is a major weed pasture and arable land. If animals eat produce salivation, nasal out of control, difficulty breathing, swelling, tremors and other symptoms, if spread to farmland, will affect crop growth. This weed in China is still very rare, and only found reported July 5, 2012 in Jinan, Shandong Yellow River Bridge in the north, has now been included in the "People's Republic of China entry plant quarantine potentially dangerous diseases, insects, weeds list . "
??2 newly discovered relatively rare late rice brown spot disease (see Figure 2). This disease, also known as flax leaf disease, is widely distributed, mainly in the spores attached to the rice straw or disease, or disease mycelium lurking in the straw winter, sowing the following year after the bacteria can infect seedlings directly, but in paddy harvest rare.
??3 found a sharp top Fusarium (Fusarium acuminatum), oat Fusarium (Fusarium avenaceum) and wheat crown rot (Fusarium pseudograminearum) caused by wheat roots, stem base rot disease and a new record wheat scab. In addition, the project also attempts to Cytb (cytochrome DNA b) and D-loop (mitochondrial DNA D-loop region), ITS1 (first internal transcribed spacer region of the ribosomal DNA) and ITS4 (application fungal universal primers) DNA sequence analysis method used in barcodes work.
??Through implementation of the project, master of China's major pests and their natural enemies of crop species, distribution, and other basic information on the status quo, not only for the early crop bio-hazard early warning, disaster emergency control, active defense, the effective protection of natural enemies, provide the basis for efficient use of scientific data, will also provide an important guarantee for ecological agriculture and food security in China.


Figure 1 silver 毛龙葵 community


?Figure 2 rice brown spot disease
 
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