摘要
对干旱季小麦进行以叶带根追肥研究,设计不同施肥量、施肥时间、次数、器械、施肥浓度5个因素进行追肥试验.结果表明：用肥量相等时,以叶代根追肥相比根系追肥增产效果极显著;以叶代根追肥次数对产量影响不显著.以叶代根施肥量为7.5 kg/667 m2相比根系追肥15 kg/667 m2增产效果显著.在适宜施肥量及相同施肥方法条件下,施肥量愈多,产量愈高,经济效益则降低.在前期施足基肥的情况下,以叶代根追肥1-3次,增产10.76%-19.78%,平均增产13.92%;以倒数第2叶时期追肥效果最好,而根区追肥仅增产3.6%.以叶代根追肥时期,以返青期、拔节期、孕穗期3次喷肥产量最高,经济效益最佳.在器械选择上,以弥雾机高浓度追肥增产幅度大,经济效益高.
To conduct the research of additional fertilizer in ＂driving roots with leaves＂ of wheat in dry seasons, we need to do the experiment considering the following five factors ： different fertilizer amount, time, frequency, apparatus and thickness.Results show that when the fertilizer amount is the same, compared with root dressing, ＂driving roots with leaves＂ increases more production, and the effects are more remarkable. The times of ＂driving roots with leaves＂ has no significant effects in increasing production. When we adopt ＂driving roots with leaves＂, the fertilizer amount of 7.5 kg / 667 m2 is more remarkable than15 kg / 667 m2 of root dressing. Under suitable fertilization amount and methods, the more the fertilizer amount,the higher the production, but the lower the economic performance. With enough base fertilizer, one to three times additional fertilizer of ＂driving roots with leaves＂ will increase a production of 10.76%-19.78%, on the average 13.92%.The best Dressing effect lies in the last but one period,with an increase of production of 3.6% in root dressing. Spraying fertilizer in turning green, jointing and booting stages, we get the most production and the optimum benefits. In the period of ＂driving roots with leaves＂, we get the most production in turning green, jointing and booting stages. On instrument selection,if putting high concentration in atomizing sprayer when we need additional fertilizer, we will get a large amplitude of production and the best econimical benefits.
出处
《农业科学研究》
2016年第4期1-5,共5页
Journal of Agricultural Sciences
关键词
干旱季
以叶代根
追肥
小麦
dry seasons
driving roots with leaves
water conservation
additional fertilizer
