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在皖北和皖南生态条件不同的烟区,作烤烟喷施稀土的田间试验。经联合分析表明,烤烟大田生育期间喷施三次浓度为2—6/万的稀土农乐,改善烟株的生育状况,均能增加上中等烟叶的比重,显著或极显著地提高烟叶的产量和产值。不同浓度的稀土间比较:亩产值4/万处理的主效应最大,但由于稳定性差,故仅适用于宿县夹沟试点;2/万处理的产值虽不及4/万,但其稳定性好,故宜在各试点应用;6/万处理的产量虽高于2/万,但其均价低,从“优质适产”出发,2/万处理则优于6/万处理。稀土对烤烟的增产增质效应,已为河南省大面积试验、示范所证明,也为我省1984～1985年的试验所证实。但对于不同生态条件下稀土的效应及其稳定性的综合分析尚未见报道,本文就我省1985年的试验结果对此作一分析。
In northern Anhui and southern Anhui different ecological conditions of the tobacco area, as the flue-cured tobacco spray rare earth field trials. The joint analysis showed that three times during the growth of flue-cured tobacco spray spraying rare earth agar at a concentration of 2-6 / 10000, to improve the fertility of tobacco plants, can increase the proportion of the upper middle leaf, significantly or very significantly increase the yield of tobacco and output value. Comparison of different concentrations of rare earth: the main effect of 4 per 10,000 acres of the main effect of the largest, but because of poor stability, it is only applicable to the Suxian Jiagou pilot; 2 / 10,000 treatment, although less than 4 / 10,000, but its good stability Therefore, it should be applied in all pilot projects; although the output of 6 / 10,000 treatment is higher than 2 / 10,000, its average price is low. Starting from “good quality fitness”, 2 / 10,000 treatment is better than 6 / 10,000 treatment. Rare-earth production of flue-cured tobacco increase the quality effect has been large-scale tests in Henan Province, demonstrated by the demonstration, but also for our province 1984 to 1985 tests confirmed. However, the comprehensive analysis of rare earth effect and its stability under different ecological conditions has not been reported yet. This paper analyzes the results of our province in 1985.