In 2017, the occurrence trend of the East Asian migratory summer locusts showed high density spots in some areas.

On April 6-7, the National Agricultural Technology Center held the 2017 East Asian locust summer plague trend meeting in Jinan City, Shandong Province. The meeting was based on the results of the investigation on the area of ​​wreckage, the density of mites and the development progress of the autumn and spring. Based on the comprehensive analysis of the meteorological conditions and ecological environment, it is expected that the summer locusts in East Asia will be lighter in 2017, and there may be high-density plaques in some areas.

First, the trend

It is expected that Xia Wei will occur in the middle of the Bohai Bay area, and the Huahu Lake and the Yellow River area will be lightly affected. The other areas will be lightly affected, with an area of ​​9.9 million mu and a controlled area of ​​5.6 million mu (the area and area of ​​each province). See Table 1). Among them, Tianjin Beidagang, Hebei Nandagang, Haixing, Anxin, Zunhua, Zhangping, Shandong Dongming, Henan Shuyang County, Huiji District, Shanxi Yucheng, Yongji, Shaanxi Daxie, Hainan Oriental, etc. may appear High-density enamel film. The excavation period is in the middle and the middle of May; the third infancy is in the upper and middle of June.

Table 1 Trend Forecast Table for the occurrence of the East Asian migratory locust in each province in 2016

Province occurrence

degree

(level) occurs

area

(10,000 mu) up to standard

area

(10,000 mu) unearthed

(month/ten) three-year age

(month/day) major occurrence area

Hebei 22201105/中六/中保定,沧州,

邯郸, Shijiazhuang,

Tangshan, Langfang

Tianjin 340205/中中下6/上大港,宁河

Liaoning 1215/中中下6/下葫芦岛, Panjin

Shanxi 23555/下6/中中下运城

Shaanxi 257235/中六/上,中渭南

Shandong 33302305/中中下5/底至6/Middle East Camp, Binzhou,

Heze, Jining,

Zaozhuang, Tai'an

Henan 21901205/中六/上郑州, Kaifeng,

Xinxiang, Xiangyang,

Jiaozuo

Jiangsu 250205/中中下6/上,中徐州

Anhui 157265/中五/下至6/上阜阳,淮北

Guangxi 1644/中至5/中五/Up to 6/中来宾,Liuzhou, Hepu

Hainan 1416/Upper 6/Central Oriental, Zhangzhou

Second, the basis of prediction

(1) The area and density of autumn debris are lower than the average in recent years

In 2016, the area of ​​East Asian locust fall rafts was 7.547 million mu, which was 7.1% and 12.4% lower than the average of 2015 and the past five years respectively; the average density of wreckage was 10.2 per mu, which was 5.1 times lower than the average of 2015 and the past five years respectively. % and 9.2%.

Although Tianjin Beidagang, Hebei Nandagang, Haixing, Anxin, Zunhua, Zhangping, Shandong Dongming, Henan Shuyang County, Huiji District, Shanxi Yucheng, Yongji, Shaanxi Daxie, Hainan Oriental, etc. More than 100 high-density debris spots, but the area is only 83,000 mu, and is 23.1% lower than 2015, and 31.6% lower than the average of the past five years.

(2) After the winter, the egg density is lower than the average of the previous year and the past 5 years.

In the main sputum area, the egg density was investigated in spring, and the national average was 1.3 capsules per square meter, which was lower than the previous year's 2.2 capsules and 1.7 capsules in the past five years. Among them, Tianjin and Henan were 5 and 2.3 respectively; Hebei, In Shaanxi and Shandong, there are 1.2, 1.9 and 1.1, respectively, and the rest of the provinces are below one. The winter survival rate averaged 93%, which was higher than 89.5% of the previous year and 92.3% of the average of the past three years.

(3) The climatic conditions and the ecological environment of the reclamation area have no adverse effects on the occurrence of aphids

According to the prediction of the National Climate Center, in April and May, the temperature in the main reclamation areas of the Bohai Bay, the North China Lake, and the middle and lower reaches of the Yellow River was slightly higher than normal, and the precipitation was close to normal. There was no obvious adverse effect on the development and hatching of the eggs. After years of ecological transformation in the locust-producing area, the area of ​​Yishao has been significantly reduced. However, in recent years, the water level of the lakes in North China fluctuated greatly. The beaches of the lower Yellow River, Nentan, Jixintan and Jiahetan increased, which provided for the local occurrence and accumulation of the East Asian migratory locust. Suitable habitat.

(Pawn and disease survey office feed)

This article URL: 2017 East Asia 蝗 蝗 蝗 蝗 蝗 蝗 蝗 预报 局部 2017 2017 2017 2017 2017 2017 2017

Disposal Medical Supply

Medical Equipment Disposal,Syringes Needles Sizes,Disposable Syringe,Insulin Syringe

FOSHAN PHARMA CO., LTD. , https://www.full-pharma.com