اعلانات هامة

The objective of this research is to study the effect of accumulative of phosphate fertilization and green manure (planted vetch Vicia sativa between the olive trees Olea europea) in certain fertility soil properties. Was implemented in collaboration between the faculty of Agriculture (University of Aleppo) and the Centre for Research in Idleb and olive in olive fields, within the two sites of northern Syria. The experiment was split-split designed, where the factors studied were soil depth and four treatments agricultural three replications (Port and without the addition of phosphate fertilizer, Port with the addition of phosphate fertilizer rate of 90 kg P205 / ha, planting vetch without the addition of phosphate fertilizer, planting vetch with the addition of phosphate fertilizer rate of 90 kg P205 / ha), and repeated the experiment during the years (2003.2004, 2005, 2006.2007). Soil samples were taken by Uighurs from each site and each treatment before planting vetch annually and to two depths (0-25 and 25-50 cm). The determination of available of phosphorus and organic matter, and use the Genstat statistical analysis. The results showed a gradual rise (not significant), in general, phosphorus concentration with time (over the years) in both locations as a result of the application of various treatments. It also doubled the amount of phosphorus in the soil generally in both locations but did not notice a significant difference in the concentration of phosphorus to the average of each site across the various years. Also significant vetch treatment with the addition of phosphorus fertilizer on all the remaining treatments. As well as not to increase the available phosphorus content by adding a dose of phosphate fertilizer annually. The results also show a decrease in the content of organic matter from the 2003/04 season, as a result of the application of various treatments. The observed significant differences at the level (P <0.001) between years. It also different content of the soil organic matter applied in different treatments, as observed significant differences among transactions at a level (P <0.001). As well as increased content of the soil organic matter annually as a result of growing vetch and its returned in the soil before flowering.

صممت التجربة بطريقة القطاعات المنشقة المنشقة، حيث أجريت أربع معاملات زراعية بثلاث مكررات (بور وبدون إضافة السماد الفوسفاتي، بور مع إضافة السماد الفوسفاتي بمعدل 90 كغ :P20/هـ)، زراعة البيقية بدون إضافة السماد الفوسفاتي، وزراعة البيقية مع إضافة السماد الفوسفاتي بمعدل 90 كغ P20/هـ)، بالإضافة إلى عمق التربة (0-25 و25-50 سم) وكررت هذه التجربة خلال سنوات(2003، 2004، 2005، 2006، 2007 )وأجري تقدير الفوسفور القابل للإفادة من قبل النبات والمادة العضوية، وأستخدم برنامج Genstat للتحليل الإحصائي.