NOTE: there are also tables, but I don't know how to handle them. I pasted them into this "thing" and coloured them in green. I have to contact the authors because there are some strange things...

Winter wheat progressed well during May 2016 in the main production regions of China, especially in Hebei, Shandong, Henan, Anhui and Jiangsu provinces. In the middle of April and early May, the temperature of the main wheat region was 0.5～1℃ higher than during past years, especially in the northern Huanghuaihai, southern North China, and most of southwest of China. Favourable temperature and above average rainfall have created conditions conducive to aphid reproduction, powdery mildew development and sheeat blight dispersal in the eastern southwest China, Huanghuaihai, and the middle and lower reaches of the Yangtze River. 

The total wheat area affected by aphids has reached 16 million Ha, mostly in Huanghuaihai, middle and lower reaches of the Yangtze River, and eastern and southern Southwest China (Figure 4.1 ). Most damage, some of which severe (Table 4.1) occurred in 14 million Ha spread over eastern Sichuan, southern Gansu, central Shaanxi, central Hubei, and most of Henan, Shandong, Anhui and Jiangsu.

Table 4.1 Statistics of aphid in China (May 2016)

Region Area / thousand hectares
Absence Slight Moderate Severe Total Occurrence ratio
Huanghuaihai 3964.8 1888.3 6481.7 2138.8 14473.6 72.6%
Loess region 1177.2 257.4 326.1 947.4 2708.1 56.5%
Lower Yangtze 1288.2 128.9 2989.7 400.1 4806.9 73.2%
Southwest China 385.9 208.2 252.1 308.1 1154.3 66.6%

Figure 4.6. Distribution of winter wheat aphidin China, May 2016

Powdery mildew (Figure 4.2 and Table 4.2) damaged around 8 million Ha of wheat in the whole China, with the disease mostly found along the middle and lower reaches of the Yangtze River and most of Huanghuaihai. The most severely affected areas include central Anhui, most of Henan,Southern Jiangsu, central Hubei, and southern Gansu. For these provinces, the total damaged area is about 6.7 million Ha.

Table 4.2 Statistics of powderymildew in China (May 2016)

Region Area / thousand hectares
Absence Slight Moderate Severe Total Occurrence ratio
Huanghuaihai 8808.4 1772.2 2270.0 1623.0 14473.6 39.1%
Loess region 2362.1 117.7 155.8 72.5 2708.1 12.7%
Lower Yangtze 3009.7 865.9 669.9 261.4 4806.9 37.4%
Southwest China 928.5 104.4 88.0 33.3 1154.3 19.6%

Figure 4.7. Distribution of wheat powdery mildewin China, May 2016

Winter wheat sheath blight (Figure 4.3) infected about 6.1 million Ha in the whole of China, where the disease was widespread in most regions of Huanghuaihai. The most severe impact (Table 4.3) was observed in northern Anhui, most of Henan, southern Jiangsu, central Hubei, and southern Shaanxi, where the the total damaged area reached 4.8 million Ha.  

Table 4.3 Statistics of wheatsheath blight in China (May 2016)

Figure 4.8. Distribution of wheatsheath blight in China, May 2016

Region Area / t

housand hectares
Absence Slight Moderate Severe Total Occurrence ratio
Huanghuaihai 10273.2 1704.8 2063.8 431.8 14473.6 29.0%
Loess region 2101.5 112.7 328.6 165.2 2708.1 22.4%
Lower Yangtze 3778.2 527.6 422.0 79.1 4806.9 21.4%
Southwest China 844.3 63.7 174.9 71.4 1154.3 26.9%