Winter wheat dead seedlings

Symptoms Winter wheat dead seedlings occur annually. The rate of dead seedlings less than 10% has little effect, while higher than 20% will cause a reduction in production. Some of the dead seedling rate of 30% -50%, serious reduction in production.

There are four main causes of the disease: First, unfavorable climatic conditions mainly refer to low temperature and drought, that is, total annual precipitation, summer precipitation, and winter wheat precipitation have a significant impact on dead seedlings. And drought is often the dominant factor in the death of winter wheat in many regions. The cold-resistance capacity of the two varieties is generally cold-resistant winter wheat, generally able to endure the low temperature of -23 °C, the ground temperature is lower than -23 °C, serious dead seedlings. Third, the soil is sandy in nature, and has poor water retention. Fourth, cultivation measures in the base drought year, improper cultivation measures, will increase the winter dead seedlings. For example, in the drought-prone soils, the dead seedlings in the wheat fields that were sown in light, sown early, and had excessive seedlings were heavy. The planting was too prosperous before the winter and the water consumption was large, resulting in a physiological drought, weakening the cold resistance of the seedling itself, and the shallowing of the tillering section, which caused the tillering section to be on the dry soil layer and aggravate the dead seedlings. In addition, in the year of basic drought, the dead plants with poor sensation are heavier.

Control methods (1) Drought is the dominant factor in winter wheat dead seedlings. In the year of basic drought, appropriate cultivation and conservation measures should be taken to reduce the rate of dead wheat. First, we must pay attention to the use of drought-resistant varieties. Winter Wheat District can choose buckwheat No. 40, No. 41, Jinmai 50, 51, 52, 53, Lumai 21, Yumai 38, Chuanmai 25, Mianyang 26, Guifeng 1 , Jinsong 49, Xingmai 17, Haomai 19, 20, 21, Wanmai 8, Xindong 19, 20 and other drought-resistant varieties. In spring wheat area, drought-resistant spring wheat varieties such as Jinchun 13, Longmai 23, Linmai 30, Luchun 15, Minchun 16, Huining 17 and Hunchun 8139 can be used. (2) Cultivate pre-winter strong seedlings and do a good job of wintering management. 1 timely pouring frozen frozen water poured wheat frozen water, soil moisture can increase the wheat field, stable temperature, reduce frost damage frozen water poured too early or too late. Pouring too early, the temperature is high, evaporation is large, the surface is easy to crack, overwintering the wheat seedlings is unfavorable; too late to water has been frozen, the water is not easy to infiltrate, the area of ​​water ice, will suffocate wheat seedlings. Therefore, the frozen water must be poured at a proper time. The most appropriate time for pouring frozen water is “night freezing and simmering”. As the saying goes, “freezing in the night, pouring frozen water is just right.” With full time, it is appropriate to start pouring from the beginning of winter to the end of snow. 2 do a good job cover soil cover fertilizer cover soil cover fertilizer is to ensure safe winter wheat seedlings an effective measure. Specific methods: First, cover soil. For some wheat fields with poor sowing quality or over-seeding, you can use the method of covering the soil. Select fine weather to cover the ground surface with shovels, etc., to cover the trenches to avoid bare roots and reduce wheat seedlings. In addition, some pit soil or old house soil can be sprinkled in the wheat field, which also plays the role of antifreeze. The second is cover fertilizer. In the wheat field where no coarse fertilizer is applied or applied less, a layer of coarse fertilizer is applied in winter to increase surface temperature, reduce frost damage and protect wheat seedlings. 3 Grasp the cracking of winter wheat grinds in wheat fields can break up the soil, consolidate the soil, make up for cracks, and prevent the death of wheat seedlings caused by surface cracks in the winter. In particular, when the autumn drought is severe, the soil preparation is not fine, and it is unfavorable for the wintering of wheat. Therefore, it is necessary to step up the grinding of wheat in the winter season and consider it an important measure to implement. 4 Forbidden pig and sheep buckwheat seedlings pigs and sheep to eat wheat seedlings will cause a large number of dead seedlings, when serious, can make a large number of wheat production, must be strictly prohibited. 5 Before sowing, use Tianwei foliar fertilizer 500 times solution soaking for 2-4 hours, dry and sow. 600-800 times of liquid is sprayed back to the green joints, 700 times is sprayed in the late stage of Yanyang to the early stage of grouting, and can also be soaked with Wanjiabao 800 times liquid for 24 hours before sowing, and then sown after drying. If necessary, spraying 500-600 times of Wanjiabao on the wheat from booting to filling stage, once every 15 days for two consecutive times. It has a significant effect in preventing dead seedlings and increasing yield.

The surface is slightly sugary, the color is fresh and crisp, sweet and refreshing, the original fruit flavor is rich, the color, fragrance, taste and shape are good. The representative products mainly include plum series products, as well as sugar bergamot, honey citrus, fig and so on. Back sand products, dry surface, slightly icing sugar, fresh color, chic shape, crispy entrance, sweet taste, representative products have jujube series products, as well as golden silk kumquat, sugar bayberry, sugar cherry, etc.

Candied Fruit Snacks

Green Raisins,Cranberry Snacks,Hawthorn Snacks,Dried Tangerine Peel Plum

Hangzhou Aiyomi food co.,LTD , https://www.aiyomisnacks.com