Grasping the management of winter jujube in spring and promoting the high quality and high yield of fruit
The jujube is a late-maturing jujube variety, with large fruits, shape specifications, and sweet and crisp taste. Due to its extremely resistant storage and high market value, it is favored by many farmers. The management of winter jujube focuses on the spring, Zhang Mingke, a research associate at the College of Horticulture, Northwest Agriculture and Forestry University, said that doing a good job in the management of the spring has an obvious role in promoting the growth of winter jujube, increasing yield, and improving quality. Timely top dressing and reasonable tillage "If you want to grow fruit well, you must get good fertilizer first. Spring is a good season for topdressing." Zhang Mingke said that nitrogen fertilizer is the main fertilizer in spring, and the best top dressing time is before and after germination of winter jujube and from April to May. , The general adult tree in the outer side of the tree, digging 4 to 8 deep 30 ~ 40 cm pits, topdressing each urea 0.5 to 1 kg, superphosphate 2 kg, young trees reduce it. At the same time should pay attention to spring irrigation, especially in budding and flowering, irrigation at this time is very critical, generally use hole irrigation or furrow irrigation, irrigation according to tree vigor, age, weather, and lyrics. In addition, attention should be paid to ploughing in spring, and the number of ploughing should be 2 to 3 times, and the depth of ploughing should be 30 to 40 cm. The depth from the trunk should be shallower to prevent severe root injury. Through ploughing, the soil on which winter jujube grows is often kept loose and free of weeds, which reduces evaporation of soil moisture and protects the soil. It also eliminates overwintering pests and reduces the occurrence of pests and diseases. Pruned properly pest control The pruning of winter jujube tree is a key link in the management process, which has a positive effect on regulating the nutrient distribution of the tree and promoting the growth and transformation of the nutrient. Zhang Mingke said that the pruning of winter jujube should take into account the layout of branches, the main branch natural round head shape, the main branch to stay 5 to 6, leaving 3 to 4 branches per main branch, while the diseased branches, residual branches, insect eggs Cut it out and collect it for burning. For the prevention and control of pests and diseases, early detection and early control should be adhered to. In particular, the pests in the germination period of the jujube tree in the spring, such as Zaojiao, edible budworm, jujube, and non-toxic moth, should be promptly adopted corresponding control measures. For diseases such as rust, anthrax, and ring rot disease, when cleaning the date garden in the spring, the diseased branches are combined and burned to reduce the occurrence of diseases.
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