摘要
针对新疆人工种植甘草产量低、水肥利用效率不高的生产状况,以水肥耦合为中心,通过二次回归通用旋转组合设计方案,建立回归模型并进行效应解析,结果表明:在灌水量、施肥量充足情况下,甘草产量与灌水量、施肥量呈抛物线关系;水肥耦合效应明显,具有明显增产效果,在灌水量为:255.56mm、施肥量为:900.00kg/hm2时,甘草产量达到13226.48kg/hm2,但过多的水肥投入并不有利于甘草增产,在灌水量超过273.3mm或施肥超过900.00kg/hm2时,甘产产量呈下降趋势。
In view of Xinjiang manual planter licorice output low, sludge fertilizer use efficiency not high production condition, take the sludge fertilizer coupling as the center, through two return general revolving combination design proposal, establishes the return model and carries on the effect analysis,The results show that the relationship between licorice root yield and the irrigation amount , Apply fertilizer amount is Parabola,For Coupling Effects of Water and fertilizer have the effect of increasing cotton yield,The sludge fertilizer coupling effect is obvious, has the obvious production increase effect, is irrigating the quantity is： 255.56mm, the quantity fertilizer are： When 900.00kg/hm^2, the licorice output achieves 13226.48kg/hm^2, but when water and fertilizer supplies is excessive, the licorice root yield will decrease. When irrigates the quantity to surpass 273.3mm or applies fertilizer surpasses 900.00kg/hm^2, Gansu produces the output to assume the drop tendency.
出处
《中国农学通报》
CSCD
2007年第7期337-340,共4页
Chinese Agricultural Science Bulletin
基金
国家科技攻关项目"准噶尔盆地绿洲边缘天然植被保护与农业开发技术与示范"(2002BA517A)
关键词
甘草
水肥耦合
抛物线
Liquorice, Water-fertilizer coupling, Parabola
