稀土在青海农区的增产效应及施用技术研究

１９８９－１９９２年，在青海东部农区的５０多个试验及２６８０ｈｍ＾２大面积示范、验证结果表明，稀土具有良好的刺激增产作用，粮食作物增产４．６％－１１．２％，油料作物增产５．１％－１８．２％，豆类增产５．８％－１０．３％，蔬菜增产１．４％－２８．０％，并能改进蔬菜品质，不同作物稀土施用方法及适宜用量有明显差异。稀土的刺激效应受氮、磷施肥量的影响。用量以４５０－９００ｇ／ｈｍ＾２为佳，施用方法可采用浸

Rear Earths Effectation and Application in Cultivated Regions of Qinghai

In 1989~1991,more than 50 experiments and 2 680 hectare verification example were conducted in cultivated regions of Qinghai. The results indicated that application of RE can increase yield up to 4.6%~11.2% for food crops,5.1%~18.2% for oil-bearing crops,5.8%~10.3% for pulse family crops and 1.4%~28.0% for vegetable,it also improved quality of vegetable and grain. Some of the reasons for increase yield were due to regulating and controlling the enzyme activity.expanding the leaf area for photosynthesis, adding the absorption of nutrient,and promoting seed development. There were different application technique and concentration of RE for many crops.