灵石县淡褐土旱作玉米土壤养分校正系数的研究

Researched for the Soil Nutrition Correlation Coefficient at Dry Maize on the Weak Brown Earth of Lingshi

为了能够顺利地完成当地的测土配方施肥项目,通过进行"3414"常规5个处理的试验研究,了解测土配方施肥重要的参数,土壤养分的校正系数的数值以及它们之间与投肥之间的相互关系。结果表明,氮的校正系数与土壤中的碱解氮呈负相关关系,与土壤中的有效磷、速效钾以及在合理的范围内磷肥的投入、氮肥的利用率、缺钾区的相对产量呈正相关关系,与缺氮区的相对产量没有显著的相关关系;磷的校正系数与磷肥的利用率呈显著的正相关关系,与土壤养分含量的碱解氮、有效磷、速效钾以及氮、磷、钾肥的投入呈负相关关系,与氮肥利用率和缺磷区相对产量及缺钾区相对产量亦有显著的负相关关系;速效钾的校正系数除与速效钾呈负相关关系外,与氮肥和钾肥的利用率及缺磷区的相对产量呈正相关关系,而与缺钾区相对产量的关系则是以相对产量的85%为界,小于85%是正相关关系,大于85%呈负相关关系。

In order to finishing the project fertilizing proportion Based on soil test favorably, through the experiment of five treatments with ＇3414＇, know the important coefficient of researching of fertilizing proportion based on soil test, the relative relationship of soil nutrition correlation coefficient with putting fertilizer and different soil nutrition. Be cognizant of the soil nutrition correlation coefficient, it was negative relative relationship between soil nutrition correlation coefficient of nitrogen with quick results nitrogen, there were positive relative relationship with available phosphorus, the quick available kaliums, phosphoric fertilizer that had been fertilized and the rate of utilized nitric fertilizer ＆ relative output of kaliums be lacked, hut there was not relative relationship with Relative output of nitrogen be lacked. It is negative relative relationship between soil nutrition correlation coefficient of phosphorus with quick results nitrogen, available phosphorus, quick available kaliums and phosphoric, nitric, potassic fertilizer that has been fertilized, but is positive relative relationship with the rate of utilized phosphoric fertilizer, it is positive relative relationship between soil nutrition correlation coefficient of kaliums with quick results nitrogen, available phosphorus and phosphoric, potassic fertilizer that has been fertilized except quick available kaliums. It is the negative relative relationship with the relative output of nitrogen he lacked over 85%, situation is reversed when the relative output are lacked 85%.