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水稻高产与植株的长相密切相关,如何通过栽培措施,特别是氮肥的合理施用,使水稻中后期在保证每亩穗数的前提下,提高结实率,让穗、粒、重均衡发展,培养稻株具有高产的长相。为此,我们对麦茬水稻中期氮肥的控制方法、施用时间及效果,进行了三年的试验调查。其结果是:一、水稻生态与结实率的关系根据麦茬稻的生长情况,要获得亩产千斤,一般要求每亩有30万有效穗,这在目前栽培条件下是可以做到的。石家庄地区只要能在6月底栽秧、7月中旬分蘖达到高峰,一般每亩有50—60万苗,最后
The high yield of rice is closely related to the appearance of the plant. How to increase the seed setting rate through the cultivation measures, especially the rational application of nitrogen fertilizer, Strain has a high-yielding appearance. To this end, we conducted a three-year experimental investigation of the control methods, application time and effect of nitrogenous fertilizer on wheat stubble. The results are: First, the relationship between ecological rice and grain yield According to the growth of wheat stubble, to obtain a kilogram per mu, generally require 300,000 per acre effective panicle, which is currently under cultivation conditions can be done. Shijiazhuang region as long as the end of June planted in mid-July tiller to reach the peak, the general per acre have 50-60 million seedlings, and finally