苹果树施用硅钙肥的效应

Effects of Si-Ca Fertilizeron Apple

钙是植物必需的大量元素之一，在果树上应用的报道较多。硅是大多数作物的有益元素，在果树上的应用未见报道。硅钙肥是沈阳热电有限化肥生产公司生产的，含ＳｉＯ２２５％－２８％、ＣａＯ１１％－１３％。１９９４－１９９６年苹果树施用，增产４４％－２２．４％。

Calcium is one of the majorelement to plant and there have been many reports on its application tofruit trees. Silicon is beneficial to most crops, but there has not been any report on its application to fruit trees.Si- Ca fertilizer produced by Shenyang Power Plant Fertilizer Co. Ltd. contains 25% ~ 28% silicon dioxideand 11% ~ 13% calcium oxide. It was applied to apple trees during 1994 ~ 1996. A 4. 4% ~ 22. 4% of increase of yield was achieved. The adequate amount for application was 10 ~ 12kg/plant.