破解盐碱地难题，智慧农业如何点绿成“金”？

Core Insights - The article highlights the transformation of a saline-alkali land in Shandong Lijin into a high-tech vegetable factory, the Kaisheng Haofeng (Lijin) Smart Agriculture Demonstration Park, which produces high-quality cherry tomatoes year-round without relying on traditional farming methods [1][3]. Group 1: Agricultural Innovation - The demonstration park utilizes an intelligent management system to monitor and control 240 parameters such as temperature, humidity, and nutrient levels, allowing for a yield of 30 kg per square meter, which is 5 to 6 times higher than traditional greenhouses [3][6]. - The facility employs a soil-less cultivation method using rock wool substrates and bee pollination techniques, achieving clean production with zero heavy metals, zero pesticide residues, and zero hormones [6]. Group 2: Economic Impact - The park has created over 200 local jobs, with an average annual income increase of 60,000 yuan per person, significantly improving the livelihoods of local villagers [5]. - Workers like Qin Shuai have reported substantial income increases, earning around 300 yuan daily through piecework, compared to previous jobs with monthly incomes below 3,000 yuan [5]. Group 3: Market Reach and Sustainability - The products are marketed through a nationwide sales network, leveraging e-commerce platforms like Tmall, JD.com, and offline retailers, ensuring delivery to consumers' tables within 48 hours [5]. - The park serves as a replicable model for agricultural transformation in saline-alkali regions, promoting a shift towards standardized, chain-oriented, and smart agricultural practices [6].