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为了探索施磷量对油茶果实性状、养分含量和产油量的影响,确定适宜的磷肥施入量,本研究设置了5个磷肥水平,以赣无性系油茶作为试验材料,在江西玉山县开展单因素磷肥试验。结果表明,赣无性系的油茶果形指数、单果质量、干出籽率、干出仁率、籽仁出油率、鲜果含油率、单株产油量和果实养分含量都随施磷量的提高而出现先增大后减小的现象,P3处理(单株年施磷量47.15 g/kg)时达到最大值;鲜果含水率随施磷量的提高而出现先减小后增大的现象,P3处理时达到最小值;施磷能显著提高单株鲜果产量,并随施磷量的提高呈递增趋势。通过拟合磷肥施入量与单株产油量的响应曲线,确定了赣无性系油茶经济效益最高的钙镁磷肥用量为每株1.00 kg。
In order to explore the effect of phosphorus application on the fruit traits, nutrient contents and oil production of Camellia oleifera, and to determine the proper amount of phosphate fertilizer applied, five phosphate fertilizers were set up in this study. The test was conducted in Jiangxi Yushan County Single-factor phosphate fertilizer test. The results showed that the fruit shape index, single fruit mass, dry seed yield, dry kernel yield, seed kernel oil yield, fresh fruit oil content, oil production per plant and fruit nutrient content in Gan clones were all increased with phosphorus application rate Increase and then increase first and then decrease, the maximum reached at the P3 treatment (47.15 g / kg phosphorus per plant); the moisture content of fresh fruit decreased first and then increased with the increase of phosphorus application , And reached the minimum value when treated with P3. Phosphorus application could significantly increase the yield of fresh fruit per plant and increase with the increase of phosphorus application. By fitting the response curves of P application rate and oil production per plant, it was confirmed that the best economic benefit of Gan-clonal Camellia was 1.00 kg per plant.