In order to explore the practical application of ultrasonic imaging in the pregnancy stage of Mongolian sheep and the role of L-selectin in the embryo implantation process of Mongolian sheep, this paper systematically observed the early embryonic development by B-mode ultrasonic imaging wave diagnostic instrument with 5 MHz rectal probe and detected the expression of sLex and L-selectin in embryonic cells (jar cells) and endometrial cells (RL95-2 cells) by immunoassay to show the role of L-selectin in embryonic adhesion. The results were as follows: the correct rate of fetal sex determination by ultrasound imaging increased with the increase of pregnancy days and reached 93% at 84 days; sLex/L-selectin on the surface of Jar/RL95-2 cells is involved in the adhesion between embryo and endometrium; and when the concentration of L-selectin was 30 μg/ml, the implantation success rate of fertilized eggs and embryos was the highest, reaching 95%. It is proved that ultrasonic intelligent imaging exploration can summarize the imaging characteristics of the early development law of sheep fetus, which provides a basis for B-ultrasound to monitor fetal growth and predict fetal age. While discussing the molecular mechanism of implantation, it provides a new idea and means for the clinical intervention of contraception and pregnancy assistance with oligosaccharide as the target.

Under the concept of sustainable development, problems such as high resource consumption, serious environmental pollution and ecosystem degradation are the main factors restricting the sustainable development of economy. This paper aims to analyze the benefits of economic security and environmental protection from the perspective of sustainable development and scientific and technological ecological environment. This paper puts forward the construction of the indicator system for the coordinated development of eco-technology innovation and economic environment, and analyzes the experimental results of economic security and environmental benefits on this basis. The experimental results of this paper show that after the implementation of the eco-technology innovation management system (hereinafter referred to as IEIMS for convenience), the material utilization rate and unit cost are essentially stable, and the cost is significantly lower than before.

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