TONG Yu-Xin,LI Yu-ying,LIU Shuang-quan,et al.Effect of Potassium Fertilizer on Yield Benefit of Maize and Potassium Balance of Soil-Crop System[J].HEILONGJIANG AGRICULTURAL SCIENCES,2010,(11):45-48.
钾肥不同施用量对玉米产量和效益及钾素平衡的影响
- Title:
- Effect of Potassium Fertilizer on Yield Benefit of Maize and Potassium Balance of Soil-Crop System
- 文章编号:
- 1002-2767(2010)11-0045-04
- Keywords:
- potassium; nutrients balance; maize; yield
- 分类号:
- S513.026
- 文献标志码:
- A
- 摘要:
- 研究了黑龙江省玉米主产区双城地区不同钾肥施用量条件下,玉米产量、养分吸收规律以及土壤—作物系统中钾素投入—产出平衡状况。结果表明:施钾可明显增加玉米植株各部分含钾量,对秸秆钾含量的提高尤其明显。在一定范围内施用钾肥可显著提高玉米籽粒产量,随着施钾量增加,籽粒产量没有进一步提高,从而使钾肥效益降低。施钾肥的K1、K2、K3、K4处理分别比K0产量增加1 190、1 460、1 070和729 kg·hm-2;各处理钾含量大小顺序为:籽粒K4>K3>K2>K1>K0;秸秆K4>K3>K1>K2>K0;各处理钾表观盈亏量均为负值,其中K1和K2处理钾的亏缺程度最大。双城地区钾的平衡系数均小于1。从产量、效益及平衡系数看,该地区钾肥用量以K2O 100 kg·hm-2为宜,可使土壤钾素趋于动态平衡,达到玉米的高产、优质和高效。
- Abstract:
- Maize yield and the nutrient’s absorption characteristic of potassium input-output balance in soil-crop system were studied under the condition of different potassium application rates in the main maize production areas of Heilongjiang province.The results showed that K fertilizer could increase potassium content of different organs in plant distinctly,especially in straw.Application of K fertilizer could increase yield of grain but yield didn,?tincrease with K fertilizer quantity,s increasing and then K fertilizer,s efficiency decreased.The average yields of the maize under the K1,K2,K3,K4 treatments were increased by 1 190,1 460,1 070 and 729 kg·hm-2compaerd with the K0 treatment;The order of the potassium content of the treatments was:grainK4>K3>K2>K1>K0;strawK4>K3>K1>K2>K0.The apparent budget of Potassinm was negative,the extent of K1 and K2 were the most.Potassium balance coefficient was less than 1.According to yield,benefit and balanced coefficient,the best application of K fertilizer was K2O 100 kg·hm-2,which would make the fertilizer application more reasonable to reach high-yield,high-quality and efficient maize.
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备注/Memo
基金项目:“十一五“国家科技支撑计划资助项目(2008BAD96B02、2008BADA4B06);国际植物营养研究所资助项目(NMBF-Heilongjiang-2008)第一作者简介:佟玉欣(1983-),男,黑龙江省齐齐哈尔市人,硕士,研究实习员,从事土壤肥料与植物营养研究。Email:Tyxin0451@126.com。