What is the significance of pollution-free walnut production?

  Pollution-free walnuts refer to safe, high-quality, nutritious green walnut food that is free from contamination; the growing environment of the walnut trees, as well as the harvesting, processing, packaging, storage and transportation processes, are not contaminated by harmful substances. Pollution-free walnut production has strict standards, namely walnut products that meet certain conditions for the production area, comply with certain specifications in production, meet certain standards for the product, and pass certain procedures for certification, thereby obtaining a legal mark of excellent quality characteristics. Pollution-free agricultural products must have both the nutritional quality of high-quality agricultural products and healthy, safe edible quality. Faced with fierce competition in the international market, developing pollution-free walnut products is imperative. Developing pollution-free walnut production should start from the following two aspects.

  First is selecting a pollution-free base and building an ecological walnut orchard. For construction, a pollution-free ecological environment should be chosen, with no industrial or mining enterprises forming pollution sources near the base, in order to prevent harm from the industrial "three wastes." There should be no factories discharging toxic and harmful substances upstream of the rivers or groundwater used for walnut irrigation; the soil should not contain naturally occurring harmful substances; and the walnut orchard should be more than 50 m from main roads. Before establishing the orchard, the environmental protection department should be asked to test the atmosphere, irrigation water and soil near the base, and the content of harmful substances must not exceed the standards stipulated by the state. In addition, specific measures for ecological agriculture should be accelerated. For example, in walnut orchard management, nectar plants and pasture green manure crops should be planted, earthworms should be introduced, chickens and livestock should be raised, and grass cultivation should be combined with breeding. The ecological model of "one mu of land, one pig; one tree, one chicken" in the walnut orchard should be promoted. This not only solves the difficulties of insufficient organic fertilizer sources and soil fertility degradation, but also diversifies the vegetation in the walnut orchard, improves the ecological environment within the orchard, and achieves synchronous development of walnut orchard ecologicalization and product standardization.

  Second, technical regulations for pollution-free walnut production must be formulated. The production of pollution-free walnut products is a new multidisciplinary systematic project. In addition to selecting a pollution-free ecological environment, the implementation of various supporting measures should also be carried out well, and formulating scientific and practical production technical regulations is a basic task. Advanced technologies with strong operability should be adopted according to local conditions. According to the characteristics of different walnut varieties and in combination with the natural conditions of local orchards, practical and feasible operating regulations should be formulated, with strict requirements from site conditions, selection of varieties and seedlings, to orchard establishment and planting, soil, fertilizer and water management, training and pruning, flower and fruit management, and pest and disease control, all the way to the packaging, storage and transportation of walnut products. All technical measures must meet the requirements of pollution-free fruit production. In particular, key technologies such as pesticide application and fertilization must comply with relevant standards. Pesticides, fertilizers, plant growth regulators, and the like that are explicitly banned by the state, have unknown ingredients, or have not been approved for production by the state must not be used.

  Promoting pollution-free walnut production technology and developing pollution-free walnut production is an effective technical means to improve walnut quality and enhance the market competitiveness of walnut products; it is an effective technical measure to safeguard people's health and life safety; and it is a technical guarantee for promoting the sustainable development of agriculture. Promoting pollution-free walnut production technology, developing pollution-free walnut production, and raising awareness of the safety and quality of walnut products, so as to produce pollution-free, safe, high-quality and nutritious pollution-free walnut products, can effectively promote the transformation of agricultural production methods, encourage the change from extensive agriculture to intensive agriculture and from traditional agriculture to modern agriculture, and is necessary for adjusting and optimizing the structure of agricultural production; it is a practical need for improving people's living standards, safeguarding people's health, adapting to and meeting the demand of the domestic walnut product commodity market, ensuring the effective supply of walnut products, and increasing farmers' income; it is a strategic choice for improving the competitiveness of our country's walnut products in the international market, creating famous and excellent walnut product brands, and accelerating the development of export-oriented agriculture; and it is an effective way to rationally develop and utilize agricultural resources, protect the ecological environment, and promote the sustainable development of the agricultural and rural economy. Therefore, promoting pollution-free walnut production technology and developing pollution-free walnut production have practical strategic significance and far-reaching historical significance. Promoting pollution-free walnut production technology will have a profound impact on improving the edible walnut dietary structure in regions such as Northwest China, Northeast China and North China, expanding exports and foreign exchange earnings, developing export-oriented agriculture, and safeguarding people's health.