As a large agricultural country with 21%people in the world , China should develop advanced modern agricul-ture , need to use chemical fertilizer and improve the efficiency of fertilizer use .Compared with the solid state fertilizer , the liquid is more easily absorbed by crops , and the fertilizer use is more direct , efficient and economical .International-ly, Russia, the United States, Australia and other countries have taken the lead in the use of liquid fertilizer .In order to save the fertilizer , improve the utilization rate of the fertilizer , save the economic cost and reduce the pollution to the soil .Based on the parallel algorithm of the decision tree , this paper designs and studies the mechanism of the planetary system of irregular gear , which is a little waste of chemical fertilizer and the absorption efficiency .%作为占据世界21％人口的农业大国，中国要发展先进的现代农业，需要合理使用化学肥料，提高肥料的使用效率。与固态肥料相比较，液态更容易被作物吸收，肥料利用更直接，效率较高，经济成本更低。在国际上，俄罗斯、美国、澳大利亚等国家已经率先使用了液态肥料。为了节省肥料、提高农作物对肥料的吸收利用率、节省经济成本及降低对土壤的污染，基于粒计算决策树并行算法，设计了非规则齿轮行星系扎穴机构。该扎穴装置在作业中，化学肥液浪费较少、吸收效率较高。
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