论文部分内容阅读
根据新乡市西部高产区及东南部中高产区10 683个土样化验结果,研究了新乡市农田分区的土壤养分状况,并比较了小麦测土配方施肥的经济效益。结果表明:西部地区各项养分指标明显高于东南部地区,其中,有机质高4.87 g/kg、全氮高0.30 g/kg、有效磷高6.66 mg/kg、速效钾高39.27 mg/kg,而严重缺磷及缺钾的地区较东部分别少4.56%和8.24%。依据土壤肥力对配方施肥量进行估算,结果显示,配方施肥较习惯施肥节约化肥施用总量33 577.55 t,节约施肥资金1.343亿元。
According to the test results of 10 683 soil samples in the middle and high yielding areas in the high and middle producing areas in the west of Xinxiang City, the soil nutrient status of the farmland zoning of Xinxiang City was studied and the economic benefits of soil testing and fertilization by wheat were compared. The results showed that all nutrients in the western region were significantly higher than those in the southeast region. The organic matter content was 4.87 g / kg, total nitrogen 0.30 g / kg, available phosphorus 6.66 mg / kg and available potassium 39.27 mg / kg, Areas with severe phosphorus deficiency and potassium deficiency were 4.56% and 8.24% less than those in the east. According to soil fertility, the amount of formula fertilizer was estimated. The results showed that the formula fertilizer was more effective than conventional fertilization in saving fertilizer application amounting to 33 577.55 t, saving fertilizer investment of 134.3 million yuan.