应用{ 3,2 }单形重心设计法对锥栗人工林进行了配方施肥试验,得到了配方与产量之间关系的曲面响应方程。结果表明,在7个试验处理中,当配方成分为尿素(含N46% ) 0.3,过磷酸钙(含P2O520%)0. 6,氯化钾(含K2O 60%) 0.1时,产量反应最好,8a生平均每株产果量达到5.9146kg ,比对照增产了78.35%。为了寻求最佳理论配方,采用遗传算法对响应方程在约束条件下寻优,求出了3种肥料最佳理论配方分别为:尿素,0.30;过磷酸钙,0.5999996 1;氯化钾,0.1000038;与实际试验结果的最好配方非常接近。施肥后,几项主要生理指标均与对照有明显的差异,说明不同配方处理对产量的影响与生理代谢变化有关,研究结果为锥栗人工林施肥管理提供了依据。
Experiment of fertilizer had been carried out by using simplex core design and models of relationship between composition of fertilizers and yield had been obtained. The result indicated among seven treatments, the fertilizer formula and which was consisted of urea (containing N 46%) 0.3, calcium superphosphate(containing P2O5 20%)0.6 and chloride potassium(containing K2O 60%) 0.1 had the highest yield. The mean yield of fruit reached to 5.9146 kg·tree-1 at 8-year-old which was higher 78.35 % than that in contrast treatment. The genetic algorithms had been used to achieved an optimal composition, which in theory contained urea 0.3, calcium superphosphate 0.59999961 and chloride potassium 0.1000038, and which was closest to the best production from real experiments. After fertilization, there were obvious difference in several main physiological indexes between this treatment and the contrast treatment, suggesting that the influences of various fertilizer compositions on yields were related with physiological metabolism. This study provided a basis for fertilization management of Castanea henryi plantation.
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