The occurrence trend of wheat diseases and insect pests in 2022 in Kaifeng City

2022-05-06 0 By

In order to effectively do the disease and insect pest control work in the middle and later period of wheat, reduce the harm of disease and insect to the greatest extent and ensure the safe production of wheat in Zhuhai.Based on the comprehensive analysis of factors such as the overwintering base of wheat diseases and insect pests, the current occurrence of diseases and insect pests, seedling situation, variety layout, planting management level, the weather forecast from March to May by the Municipal Meteorological Bureau and historical data, the occurrence trend of diseases and insect pests in the middle and late period of 2022 wheat is predicted as follows:Affected by the waterlogging last year, some plots of wheat were sown late, seedling condition was poor, and the ability to resist disease and insect was weakened. It is expected that the occurrence degree of main diseases and insect pests in wheat in the middle and late period of 2022 in Qingdao will be more serious.Focuses on one small grain aphid, sheath blight, powdery mildew, local land wheat stalks JiFuBing aggravate the damage of the wheat spiders, leaf rust, leaf blight moderate, local may cause greater harm, such as weather conditions is appropriate, the possibility of stripe rust, 3 are popular, plant diseases and insect pests of wheat sporocyst nematode and underground pests, partial light or light.It is estimated that the total area of wheat diseases and insect pests in the city is 19.3 million mu, of which diseases are 12.1 million mu and insect pests are 7.2 million mu.Second, the main trend of wheat plant diseases and insect pests occur 1, wheat 3: climatic epidemic diseases, in recent years, vigorously promote straw returned to field survival JieGanLiang, provides the disease occurs with sufficient source of bacteria, coupled with the city wheat introduced.cultivation variety is about 3 Gao Gan more, young wheat flowering in the continuous rain or fog had there will be more popular.Estimated to occur 2 million acres, peak in early and middle May.2. Wheat rust: wheat leaf rust occurs moderately, which is estimated to occur in 1.5 million mu. Its peak period is in the middle and late may.Wheat stripe rust is expected to occur slightly, if the climate conditions are suitable, may be local epidemic, is expected to occur 1.5 million mu, peak from late April to early May 3, wheat sheath blight: heavy occurrence.It is estimated to cover an area of 2.8 million mu.It mainly occurred in the low-lying land with large amount of sowing and large population and the field with high humidity. The peak period was from mid-March to early May.4, wheat powdery mildew: heavy occurrence, mainly occur in rice stubble wheat fields and high water fertilizer wheat fields.It is estimated to occur in an area of 3.4 million mu, peak from early April to mid-May.5. Wheat leaf blight: moderate occurrence, estimated to occur in an area of 500,000 mu, moderate occurrence in some plots or varieties.The peak period was from late April to early May.6. Wheat stem base rot: moderate occurrence, severe occurrence in local plots, peak of symptoms in early and middle May.7, wheat aphid: it is expected to occur 3.8 million mu, among which panicle aphid is heavy, seedling aphid is light.The flowering period of aphid was from late March to mid-April.The peak period of panicle aphid was from late April to late May.8, wheat spider: moderate occurrence.The number of insects in the field in early spring this year is lower than usual, but with the recent rapid rise in temperature, it is very favorable for the occurrence of 2.4 million mu.The peak period is from late March to mid-April.9. Other diseases and insect pests: root rot, sporocyst nematode disease, smut, yellow dwarf disease, underground pests, grey planthopper, wheat leaf wasp, hymenoptera and so on.Contribution: Plant Protection and Quarantine Station of Kaifeng