The State Grain Bureau released an investigation report on the quality of summer wheat harvested in China in 2016.

The State Grain Administration recently released an investigation report on the quality of summer harvest wheat, which pointed out that the overall quality of wheat harvested in nine provinces was obviously lower than that of last year, with a decline in bulk density and the proportion of third-class and above wheat, and the problem of imperfect grains exceeding the standard was more prominent, with the exception of Shanxi Province. imperfect wheat grains in all provinces have exceeded the standard. Among them, because the grain filling period and harvest period of wheat in Huang-Huai area are generally affected by rainfall and other special climate, the imperfect grains in Jiangsu, Anhui, Henan and Hubei provinces exceed the standard seriously. The report is as follows:

In order to keep abreast of the quality of wheat harvested in the summer of 2016, the State Grain Administration continued to organize major wheat producing provinces to carry out centralized wheat quality inspection. The samples collected are all village-level mixed samples, the number of samples is distributed according to the output weight, and the inspection items are mainly conventional quality indicators. As of July 18, the centralized inspection work of nine major summer harvest wheat producing provinces, including Hebei, Shanxi, Jiangsu, Anhui, Shandong, Henan, Hubei, Sichuan and Shaanxi, had been completed, and a total of 1885 newly harvested wheat samples had been collected. involving 417 major producing counties (districts) in 91 cities, 27000 inspection data were obtained.

I. the overall situation of wheat quality inspection in 9 provinces in 2016

From the test data, the overall quality of wheat harvested in 9 provinces is obviously lower than that of last year. The proportion of bulk density and third-grade wheat decreased, and the problem of imperfect grains exceeding the standard was more prominent. Except for Shanxi Province, imperfect grains of wheat in all provinces exceeded the standard. Among them, because the grain filling period and harvest period of wheat in Huang-Huai area are generally affected by rainfall and other special climate, the imperfect grains in Jiangsu, Anhui, Henan and Hubei provinces exceed the standard seriously.

The test results of all samples in 9 provinces are as follows: the average bulk density is 783 g / L, which is 6 g / L lower than that of last year, with a variation range of 627 g / L and 850 g / L. The proportion from first class to fifth class is 46.3%, 29.1%, 14.9%, 5.7% and 2.6% respectively, foreign products account for 1.4%, and those above medium (third class) account for 90.3%, down 4.7% from last year. The average 1000-grain weight was 42.9g, which was the same as that of last year, and its amplitude was 28.0g~58.0g. The average hardness index was 62.8, which was 1.0 lower than that of last year, with a range of 35.6-78.8. The average content of imperfect grains was 7.1%, an increase of 1.6% over last year, of which 81.0% met the national standard (≤ 10%), down 7.5%, 10%, 20%, 13.1% and 5.9% from last year. The average falling value is 311 seconds, which is 37 seconds lower than that of last year, with a range of 65 seconds to 538 seconds.

II. Details of wheat quality inspection in different provinces

(1) Hebei

245 samples were collected, involving 66 counties (districts) in 6 cities. The overall quality is a good level in recent years. The average unit weight is 797 g / L, with a variation range of 728 g / L / 836 g / L; the proportion from first class to fifth grade is 70.6%, 19.2%, 6.1%, 3.7% and 0.4%, respectively. There are no foreign products, and those above medium account for 95.9%, which remains at the level of last year. The average 1000-grain weight was 42.8 g, with a variable range of 32.8g~52.8g, slightly higher than that of last year. The average hardness index was 65.4 and varied from 51.0 to 71.0. The average content of imperfect grains is 4.1%, with a range of 0.8% to 37.0%. Among them, the proportion of imperfect grains less than 10% is 93.5%, 10% 20% is 5.7%, and more than 20% is 0.8%. The average falling value is 340 seconds, ranging from 98 seconds to 538 seconds, 26 seconds lower than that of last year.

(2) Shanxi

42 samples were collected, involving 7 cities and 19 counties (districts). The overall quality is a good level in recent years. The average unit weight is 794 g / L, with a variation range of 762 to 833 g / L, which is the highest in recent years; the proportion from first class to third class is 61.9%, 28.6% and 9.5% respectively, and there are no fourth, fifth and foreign products; those above medium are 100%, which is higher than that of normal years. The average 1000-grain weight was 41.5g, with a variation of 34.4g~47.7g, which was 2.4g higher than that of last year. The average hardness index was 66.0 and varied from 60.0 to 69.0. The average content of imperfect grains is 3.5%, with a range of 0.8% to 9.1%. The percentage of imperfect grains in samples is all less than 10%; the average falling value is 303 seconds, with a range of 201 seconds to 369 seconds, which is 40 seconds lower than that of last year.

(3) Jiangsu

115 samples were collected, involving 13 cities and 42 counties (districts). The proportion of medium and above bulk density and 1000-grain weight were lower than that of last year, and the content of imperfect grains was significantly higher than that of normal years. The average bulk density is 780g/L, with a variation range of 627,837 g / L; the proportion from first class to fifth grade is 40.9%, 33.0%, 16.6%, 4.3%, 2.6%, 2.6%, and 90.4%, respectively. The average 1000-grain weight was 37.0g, with a variable range of 28.0g~48.2g, which was 4.5g lower than that of last year. The average hardness index was 59.5, with a range of 41.8 to 78.8. The average content of imperfect grains is 10.2%, with a range of 0.6% to 68.1%. Among them, the proportion of imperfect grains less than 10% is 69.5%, 10% 20% is 20.9%, and more than 20% is 9.6%. The areas where the imperfect grain content exceeds the standard are mainly in Nantong, Wuxi, Huai'an and other areas.

(4) Anhui

235 samples were collected, involving 8 cities and 25 counties (districts). The average unit weight 757g/L, with a range of 662 to 831 g / L, decreased by 20 g / L compared with last year; the proportion from first class to fifth grade was 14.0%, 26.4%, 31.1%, 13.6% and 10.2% respectively, and 4.7% of foreign products; and those above medium were 71.5%, down 17.7% from last year. The average 1000-grain weight was 41.8g and the amplitude was 29.5g~51.7g. The average hardness index was 63.2, with a variation range of 44.0-77.4. The average content of imperfect grains is 12.6%, with a range of 1.1% to 67.5%, which is significantly higher than that in normal years. Among them, the percentage of imperfect grains less than 10% is 51.0%, that of 10% grain is 36.2%, and that of more than 20% is 12.8%. Affected by the continuous overcast and rainy weather during the harvest, the imperfect grain content of wheat in Bengbu, Chuzhou, Bozhou, Liu'an, Huainan, Fuyang and Suzhou exceeded the standard seriously. The average falling value is only 195 seconds, ranging from 67 seconds to 373 seconds.

(5) Shandong

A total of 410 samples were collected, involving 16 cities and 78 counties (districts). The overall quality was good. The average unit weight is 797 g / L, with a variation range of 732 to 850 g / L, which is the highest in recent years; the proportion from first class to fourth class is 66.6%, 24.6%, 5.9% and 2.9% respectively, and there are no fifth and foreign products; those above medium account for 97.1%, which is similar to the normal year. The average 1000-grain weight was 41.6 g, ranging from 31.8 to 50.4. The average hardness index was 64.0, with a variation range of 44.0 to 72.0. The average content of imperfect grains is 2.7%, with a variation range of 0.2% to 16.3%, which is close to that of last year. Among them, the percentage of imperfect grains less than 10% is 98.8%, and that of 10% grain is 1.2%. The average falling value is 363 seconds, ranging from 214 seconds to 428 seconds, 28 seconds lower than that of last year.

(6) Henan

A total of 610 samples were collected, involving 105 counties (districts) in 18 cities. The average bulk density and the proportion of medium and above are lower than last year, and the imperfect grain is higher than the normal year. The average unit weight is 782g/L, with a variation range of 680 to 828 g / L; the proportion from first class to fifth grade is 40.3%, 37.4%, 15.9%, 4.4%, 1.3%, 0.7%; and those above medium account for 93.6%. The average 1000-grain weight was 44.8 g, ranging from 31.1 to 56.9. The average hardness index was 62.2 and varied from 37.7 to 74.1. The average content of imperfect grains is 8.6%, with a variation range of 0.4% 74.7%, which is significantly higher than that in normal years. Among them, the percentage of imperfect grains less than 10% is 76.1%, that of 10% grain is 14.9%, and that of more than 20% is 9.0%. Affected by the overcast and rainy weather during harvest, the imperfect grain content of wheat in Jiaozuo, Xinyang, Jiyuan, Hebi, Luohe, Zhoukou and other areas exceeded the standard. The average falling value is 321 seconds, ranging from 92 seconds to 471 seconds, 14 seconds lower than that of last year.

(7) Hubei

A total of 66 samples were collected, involving 8 cities and 21 counties (districts). The average bulk density and the proportion of medium and above were higher than that of last year, and the content of imperfect grains was higher than that of normal years. The average unit weight is 781 g / L, with a range of 682 to 813 g / L, an increase of 12 g / L over last year; the proportion from first class to fifth grade is 40.9%, 40.9%, 12.1%, 1.6%, 3.0%, 1.5% respectively; those above medium account for 93.9%, an increase of 13.6% over last year, and first class products are significantly higher than last year. The average 1000-grain weight was 43.7 g, with a variable amplitude of 36.4g~52.6g, which was similar to that of the normal year. The average hardness index was 66.0, with a range of 35.6-74.1. The average content of imperfect grains is 5.0%, with a variation range of 0.821.7%, which is higher than that in normal years. Among them, the percentage of imperfect grains less than 10% is 87.9%, that of 10% grain is 10.6%, and that of more than 20% is 1.5%. Affected by the overcast and rain during the harvest period, imperfect grains increased significantly in some areas, and the proportion of imperfect grains exceeding 10% in Jingzhou, Xiantao, Xiaogan and other cities was very high.

(8) Sichuan

A total of 85 samples were collected, involving 10 cities and 33 counties (districts). The average unit weight and the proportion of medium grade and above have decreased compared with last year, and the overall quality is obviously lower than that of last year. The average unit weight is 749 g / L, with a range of 664g / L / 806 g / L, which is 29 g / L lower than that of last year; the proportion from first class to fifth class is 8.2%, 12.9%, 36.5%, 20.0% and 13.0% respectively, and that of foreign products is 9.4%. Those above medium accounted for 57.6%, which was 37.7% lower than that of last year. The average 1000-grain weight was 44.5 g, variable amplitude 31.5g~58.0g. The average hardness index was 51.1 and varied from 38.1 to 73.3. The average value of imperfect grains is 6.9%, and the variation range of content is 0.8030.1%. Among them, the proportion of imperfect grains less than 10% is 83.5%, 10% 20% is 13.0%, and more than 20% is 3.5%. Affected by the overcast and rain during the harvest period, imperfect grains increased significantly in some areas, and the content of imperfect grains in Nanchong, Suining, Dazhou and other cities exceeded 10%.

(9) Shaanxi

A total of 77 samples were collected, involving 5 cities and 28 counties (districts). The overall quality is not as good as last year. The average unit weight 786g/L, with a variation range of 734 to 828 g / L, is similar to that of a normal year; the proportion from first class to fourth class is 51.9%, 29.9%, 13.0% and 5.2% respectively, and there are no fifth and foreign products; those above medium account for 94.8%, which is 3.9% lower than that of last year. The average 1000-grain weight was 44.9g, with a variable amplitude of 28.8g~56.5g, which was slightly higher than that of last year. The average hardness index was 65.7, with a variation range of 50.2 to 72.3. The average content of imperfect grains is 10.2%, with a variation range of 1.6% to 60%, an increase of 4.7% over last year. Among them, the percentage of imperfect grains less than 10% is 74.0%, that of 10% grain is 13.0%, and that of more than 20% is 13.0%. The average landing value was 227 seconds, ranging from 77 seconds to 365 seconds, 44 seconds lower than that of last year.