Experiment on sweet pepper nitrogen detection based on nearinfrared reflectivity spectral ridge regression
XU Di， LI Yinong， GONG Shihong， ZHANG Baozhong
1.China Institute of Water Resources & Hydropower Research, National Key Laboratory of Basin Water Cycle Simulation and Control, Beijing 100038, China; 2.National Center of Efficient Irrigation Engineering and Technology Research, Beijing 100048, Chin
Abstract Developing sustainable irrigation agriculture is one of the necessary supporting conditions for global food security and maintenance of peoples livelihood. However, farmland waterlogging salinealkaline caused by irrigation exerts an effect on crop growth process and yield in direct or indirect ways, thus severely restricts agricultural productivity, and induces negative environment effects on farmland. Based on a thorough review of formation mechanism of waterlogging salinealkaline caused by irrigation, response of crop growing and soil characteristics to waterlogging salinealkaline, as well as influence of waterlogging salinealkaline on crop yield, related management measures and technology applications for treating waterlogging salinealkaline are discussed in this paper in view of drainage, wateruse, irrigation, soil, crop, and socioeconomic etc. Besides, related research topics and important contents, namely different levels of coexistence mechanism of waterlogging salinealkaline, monitoring and evaluation of waterlogging salinealkaline coexistence situation, combination and integration mode development of waterlogging salinealkaline treatment technologies, and risk analysis and evaluation of waterlogging salinealkaline damage, are proposed to meet the goal of waterlogging salinealkaline management such as “saving irrigation, reducing emission, controlling salinity and increasing efficiency” based on sustainable irrigation agriculture.
XU Di,Li-Yi-Nong,Gong-Shi-Hong et al. Experiment on sweet pepper nitrogen detection based on nearinfrared reflectivity spectral ridge regression[J]. Journal of Drainage and Irrigation Machinery Engin, 2019, 37(1): 63-72.