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为探讨稀土元素对橡胶树干胶产量的增产效应及稀土微肥在农业航空中应用的新技术,开拓通用航空市场。我们于1989～1991年在海南省国营新盈、西庆、西华、西培等农场进行了飞机喷施硝酸稀土提高橡胶树干胶产量技术的研究。三年试验飞行166架次,作业面积4533.3公顷,干胶平均增产9.3%。试验确定了最佳使用剂量,明确了有关喷施技术参数,对硝酸稀土在开割橡胶树上的应用方式及主要增产原因也得到肯定和共识;为发展橡胶生产大面积应用提供了科学依
In order to explore the production effect of rare earth elements on rubber trunk gum production and the application of rare earth fertilizer in agricultural aviation, new technologies should be developed to open up the general aviation market. In 1989 ~ 1991, we carried out the research on the technology of aircraft spraying rare earth nitrate to increase rubber trunk gum production in the state-owned Xinying, Xiqing, Xihua, Xipei and other farms in Hainan Province. During the three-year pilot flight, it carried out 166 sorties with a work area of 4533.3 hectares and an average increase of 9.3% in dry glue. The optimum dosage was determined through experiments. The application parameters of spray technology and the application of rare earth nitrate in cutting rubber trees were also confirmed and reached consensus. This provided a scientific basis for the development of large-scale application of rubber production