鄂杂棉10号施用硼肥效应试验分析

Effect of Boron Fertilizer on E'zamian 10

在江汉平原棉区的潮土类型中等肥力田块上,以鄂杂棉10号和15%持力硼为材料进行施用硼肥效应试验。结果表明:在施用氮、磷、钾纯养分量分别为330、75、135 kg/hm2的情况下,施用硼肥增产效果明显,处理C、B、D比处理A分别增产14.05%、8.47%和7.39%;硼肥单因子拟合,施硼量与子棉产量关系一元二次方程y=246.85+700.22X-3750X2;硼养分量处于0.5-1mg/kg,目标子棉产量为4192.8 kg/hm2,推荐有效硼施用量为1.365 kg/hm2。

Using 15% Chili boron as materials, effect of boron fertilizer on E＇zamian 10 was studied in the medium fer-tility fluvo - aquic soil field of Jianghan plain cotton region. The results showed that boron fertilizer application could increase yield significantly when the application of pure N, P, K was 330, 75 and 135 kg/hm^2 respectively. Compared with treatment A, treatment C, B and D could increase cotton yield by 14.05%, 8.47% and7.39%respectively.Unary quadratic equation of unginned cotton and boron fertilizer relation was Y = 246.85 ＋ 700.22X - 3750X^2. In order to gain unginned cotton target yield 4192.8kg/hm^2, the authors recommend effective boron application by 1.365 kg/hm^2when boron nutrient content was be-tween 0.5 kg/hm2and 1.0 kg/hm^2.