Method for preventing and treating leaf scorch disease of walnuts

Abstract

The invention discloses a method for preventing and treating the leaf scorch disease of walnuts, and belongs to the technical field of agriculture. The method for preventing and treating the leaf scorch disease of the walnuts comprises the following steps of irrigating a biological agent when a new root system begins to grow, irrigating a fertilizer in the first peak period of root system growth, spraying a foliar fertilizer, preventing and treating the rot disease of the walnuts, regulating and controlling soil alkali pressing, spraying a pesticide mixed solution in the early stage of symptom development, irrigating the biological agent in the peak period of symptom development, and performing conventional field management. The prevention and treatment method provided by the invention effectively prevents and treats the leaf scorch disease of the walnuts, and avoids the phenomena that walnut leaves are brown and lose the photosynthesis capacity, so that the nutrient reserve of a tree body in the later period is reduced, and the fruiting amount and the fruit plumpness of walnuts in the next year are influenced; and according to the prevention and treatment method provided by the invention, the leaf scorch disease of the walnuts is prevented and treated, meanwhile, the tree vigor is effectively enhanced, the yield and the quality of the walnuts are improved, the economic benefits of the walnut industry are effectively improved, and effective guarantee is provided for sustainable development of the walnut industry.

Description

technical field [0001] The invention relates to the field of agricultural technology, in particular to a method for preventing and treating walnut scorched leaf disease. Background technique [0002] Walnut (Juglans regia L.) is an important economic fruit tree in the world, ranking first among the four famous nuts (walnut, almond, chestnut, pistachio). It is widely distributed in the world and has a long history of cultivation. The number and output of walnut planting in China ranks first in the world. There are walnut cultivation in more than 20 provinces and cities across the country. The total area of ​​walnut cultivation in my country is 1 million hectares, with a total of 200 million plants, including about 60 million fruit trees, and an annual output of 250,000 tons of nuts. , is one of the important pillar industries of my country's economic development. [0003] In recent years, with the continuous expansion of walnut planting area, the saline-alkali hazards and exc...

AI Technical Summary

Problems solved by technology

The disease begins to show sporadic symptoms in July every year, and enters the peak of the disease in August-September. The diseased leaves are like fire, causing the whole tree leaves or part of the leaves to die 1-2 months in advance, and lose the ability of photosynthesis. Severe It affects the nutrient reserve of the tree body in the later stage, reduces the tree vigor and also seriously affects the fruit setting and fruit plumpness of the walnut in the coming year, increases the empty shell rate of the fruit, causes serious economic losses, and affects walnuts in various regions. sustainable development of the industry

[0004] At present, the main technologies for the prevention and treatment of walnut scorching leaf disease are: the use of fungicides for disease control, but the control effect is not ideal; the use of potassium dihydrogen phosphate foliar fertilizer for disease prevention, although the disease has been alleviated, but the disease still develops in the later stage Quickly; using various trace element fertilizers, the condition has been alleviated, but it still cannot be completely resolved

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