夏红薯施用惠满丰有机复混肥增产效果研究

Increased Yield Effect of Applying Huimanfeng Organic Compound-mixed Fertilizer on Summer Sweet Potato

夏红薯施用惠满丰有机复混肥 3 0 0 ,6 0 0 ,90 0kg/hm2 后 ,较不施肥对照增产鲜薯 41 83 .5～ 6 5 1 6 .0kg/hm2 ,增产幅度 2 4 .8%～ 3 8.6 % ,平均 3 1 .8%。与施用化肥相比 ,增产鲜薯1 71 6 .0～ 40 4 8.5kg/hm2 ,增幅 8.9%～ 2 0 .9% ,增产效果极为显著。在本试验条件下 ,无论等养分量与否 ,惠满丰有机复混肥均较化肥增产效果显著 ,从增产及效益等方面综合评估 ,惠满丰有机复混肥的适宜施用量是 6 0 0kg/hm2 左右。

Applying 300, 600, 900 kg/ha Huimanfeng organic compound-mixed fertilizer on summer sweet potato, the yield of fresh sweet potato has raised 4 183.5～6 516.0 kg/ha, and increased by 24.8%～38.6% than that of not applying fertilicer. The yield has raised 1 716.0～4 048.5 kg/ha and increased by 8.9%～20.9% than that of applying fertilizer. the averaga is 31.8%,the increasa yield effectiveness is highty significant. In the case of this experiment no matter the amount of soil nutrient is equal or not , Huimanfeng organic compound-mixed fertilizer has more significant effect of increased yield than chemical fertilizer, according to the synthesized rate of increased yield and economic benefit etc, the suitable amount of Huimanfeng organic compound-mixed fertilizer is about 600 kg/ha.