CAJ | 학술논문

采用均匀试验设计和逐步回归分析方法,以先玉335为试验材料,研究了水肥等栽培因子对玉米叶片完全展开时叶面积指数的影响.多因素分析表明,其影响顺序为:底氮＞追氮＞底磷＞密度＞补水＞追肥/补水生育期＞底钾＞播期.在数学模型中,各栽培因子间耦合效应对玉米叶面积指数影响都达到了显著水平.在本试验研究范围内,当播期在5月11日,密度为80 999.8 株/hm~2,底施氮量为48.2 kg/hm~2,底施磷量为293.6 kg/hm~2,底施钾量为152.0 kg/hm~2,追施氮量为62.8 kg/hm~2,补灌量为1 199.4 m~3/hm~2,追肥/补水生育期在玉米18展叶时,叶面积指数理论最高值6.64.
채용균균시험설계화축보회귀분석방법,이선옥335위시험재료,연구료수비등재배인자대옥미협편완전전개시협면적지수적영향.다인소분석표명,기영향순서위:저담＞추담＞저린＞밀도＞보수＞추비/보수생육기＞저갑＞파기.재수학모형중,각재배인자간우합효응대옥미협면적지수영향도체도료현저수평.재본시험연구범위내,당파기재5월11일,밀도위80 999.8 주/hm~2,저시담량위48.2 kg/hm~2,저시린량위293.6 kg/hm~2,저시갑량위152.0 kg/hm~2,추시담량위62.8 kg/hm~2,보관량위1 199.4 m~3/hm~2,추비/보수생육기재옥미18전협시,협면적지수이론최고치6.64.
An experiment was conducted to study the effect of water, fertilizer and other cultivating factors on leaf area index of maize when the leaves spread by uniform experiment design and stepwise regression method using Xianyu335 as the experimental material. By Multiple Factors Analysis, the influence order is: base nitrogen＞nitrogen topdressing＞base phosphorus＞planting density＞supplementary irrigation＞growth stages of supplementary fertilizer and irrigation＞base potassium＞sowing date. In the mathematical model, the coupling effect between cultivating factors on leaf area index of maize reaches the significant level. In the research bound of this experiment, the result is that the leaf area index of maize achieves the highest theoretical value 6.64 when the sowing date is May 11, the planting density is 80 999.8 strain/hm~2, the base nitrogen is 48.2 kg/hm~2, the base phosphorus is 293.6 kg/hm~2, the base potassium is 152.0 kg/hm~2, the nitrogen topdressing is 62.8 kg/hm~2, the supplementary irrigation is 1199.4 m~3/hm~2, and the supplementary fertilization and irrigation is made in the growth stage when the eighteenth leaf of maize spreads completely.