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近年来国内外研究和推广水稻深层施肥,获得显著的增产效果。增产幅度达10～20%。深层施肥的效果与土壤、气候条件、肥料用量、水稻品种以及制作技术等有密切关系。凡保水、保肥力差的稻田,球肥深层追肥效果极为明显。在土质肥沃的稻田,深层追肥的效果决定于施肥量是否适宜,如用量偏高,因球肥肥效持久而造成水稻后期贪青徒长,秕谷率增加,千粒重减轻,虽然总粒数增加,但仍导致减产。球肥中掺入的化肥用量,也要根据不同的土质及品种而定,一般都应比表层撒施的用量减少1/3左右。球肥的增产效果与追肥时
In recent years, domestic and foreign research and promotion of deep fertilization of rice, access to significant yield increase. Increase rate of 10 to 20%. The effect of deep fertilization is closely related to soil, climatic conditions, fertilizer usage, rice varieties and production techniques. Where water, poor fertility paddy, deep fat fertilizer effect is extremely obvious. In fertile paddy fields, the effect of deep top dressing depends on whether the amount of fertilization is appropriate, such as the high dosage, due to fertilizer lasting fertility caused by the late gluttony lengthened rice, tamarisk rate increased, 1000 grain weight reduced, although the total grain number increased, Still lead to cut. The amount of fertilizers incorporated in the fertilizer, but also according to different soil and species may be, generally should be less than the amount of surface application of about 1/3. The effect of fertilizer production and dressing time