CAJ | 학술논문

采用正交设计L9(34)布置氮、磷、钾3因素3水平的肥料试验,研究氮、磷、钾配施对毛白杨杂种无性系苗木生长及生理特性的影响.结果表明:1)不同的施肥处理对相同系号的苗木影响不同,而不同系号的苗木对相同施肥处理响应也不一致,因此不仅要找出最佳的氮、磷、钾施肥量及其比例,而且要针对不同的无性系制定不同的施肥配方;2)毛白杨杂种无性系的生长和生理特征对于不同施肥配方的响应不完全一致,毛白杨杂种无性系S86号的最佳施肥配方为N(3 g)+P2O5(2.25 g)+K2O(0 g),46号的最佳配比为N(5 g)+P2O5(4.5 g)+K2O(1 g);3)毛白杨杂种无性系S86和46号处理间净光合速率×总叶面积(PTL)较净光合速率(Pn)差异更显著,并且与生长的相关性要高于净光合速率与生长的相关性,相关系数在0.80以上;4)不同的氮、磷、钾配施处理对毛白杨杂种无性系苗木各项生长指标和生理指标有显著影响.以氮肥影响最大,磷和钾肥影响较小.该研究对毛白杨杂种无性系的合理施肥具有理论和实际指导意义.
채용정교설계L9(34)포치담、린、갑3인소3수평적비료시험,연구담、린、갑배시대모백양잡충무성계묘목생장급생리특성적영향.결과표명:1)불동적시비처리대상동계호적묘목영향불동,이불동계호적묘목대상동시비처리향응야불일치,인차불부요조출최가적담、린、갑시비량급기비례,이차요침대불동적무성계제정불동적시비배방;2)모백양잡충무성계적생장화생리특정대우불동시비배방적향응불완전일치,모백양잡충무성계S86호적최가시비배방위N(3 g)+P2O5(2.25 g)+K2O(0 g),46호적최가배비위N(5 g)+P2O5(4.5 g)+K2O(1 g);3)모백양잡충무성계S86화46호처리간정광합속솔×총협면적(PTL)교정광합속솔(Pn)차이경현저,병차여생장적상관성요고우정광합속솔여생장적상관성,상관계수재0.80이상;4)불동적담、린、갑배시처리대모백양잡충무성계묘목각항생장지표화생리지표유현저영향.이담비영향최대,린화갑비영향교소.해연구대모백양잡충무성계적합리시비구유이론화실제지도의의.
In order to study the effects of different proportion of N, P, K on seedling growth and physiological properties of hybrid clones of Populus tomentosa, seedlings were treated with fertilizer combinations of nitrogen, phosphorus and potassium at three different levels in an orthogonal experimental design L9 (34).The results were as follows:Different fertilizing treatments produced different effects on seedlings of the same Populus tomentosa clone, and different clones responded differentially to the same fertilizing treatment.Therefore, optimum amounts and ratio of fertilization of N, P, K must be determined in terms of each individual clones; Seedling growth and phyosiological properties of the hydribd clones responded differentially to fertilizer treatments, and the optimum ratio of N, P, K for clone S86 was N (3 g) + P2O5 (2.25 g) + K2O(0 g) ; The optimum ratio of N,P,K for clone No.46 was N (5 g) + P2O5 (4.5 g) + K2O(1 g).The effects of different fertilizing treatments on net photosynthetic rate × total leaf area (PTL) were more significantly different than that on net photosynthetic rate, and net photosynthetic rate × total leaf area showed a closer correlation with growth (r < 0.80).Different fertilizing treatments had significant effects on seedling growth and physiological properties of the hybrid clones.The effect of nitrogen was the greatest, followed by phosphorus and potassium.This research is of theoretical and practical significance for proper fertilization of hybrid clones of Populus tomentosa.