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小麦增施磷肥有显著的增产效果,已广为群众接受。近几年来,磷肥的施用量不断增多,出现供不应求的局面,主要原因是磷肥的使用时间集中,用量较大,去秋种麦时,磷肥的供需矛盾更为突出。据统计,有效磷的亩施用量比前三年少1.5—2公斤是夺取今年小麦丰收的限制因子。试验表明,在小麦生育前、中期追施磷肥,只要用量适宜,同样可收到显著的增产效果。 1.磷肥追施的肥料效益。据试验,有不同程度的降低。底施的亩产小麦320.1公斤,冬前施的亩产230.2公斤,返青追施的294.7公斤,拔节期追施产量202.4公斤。而下茬玉米产量试验结果,在
Wheat increased phosphate fertilizer has a significant yield-increasing effect, has been widely accepted by the masses. In recent years, the application of phosphate fertilizer has been increasing, there is a shortage situation, the main reason is the use of phosphate fertilizer concentrated time, a large amount of fertilizer, the autumn wheat, the contradiction between supply and demand of phosphate fertilizer more prominent. According to statistics, the effective amount of phosphorus applied per acre 1.5-2 kilograms less than the previous three years to win this year’s wheat harvest limit factor. Experiments show that before and after wheat growth topdressing phosphate fertilizer, as long as the appropriate amount, the same can receive a significant increase in yield. 1 phosphate fertilizer topdressing fertilizer benefits. According to the test, there are different degrees of reduction. At the end of the mu produce 320.1 kilograms of wheat, 230.2 kilograms per mu before winter Shi, topdressing 294.7 kilograms of jointing, jointing 202.4 kilograms of yield. The next crop of corn yield test results