有人认为湘北不宜春制。其理由:一是春制的组合局限于早、中熟;气候不利于高产稳产,五月低温不发,六五雨多不利扬花,.再者,春制种子贮藏时间长,影响发芽率;资金周期长,等等。现就平江县春制的有利条件及高产经验谈谈春制的可行性。; 一、春制的有利条件 1、气象因素。目前所用 Some people think that the north should not be spring. The reasons: First, the combination of spring is limited to early maturing; climate is not conducive to high and stable yield, low temperature in May did not send, more than 65 rain is not conducive to flowering, Moreover, spring seed storage time is long, the impact of germination rate; Long cycle of funds, and so on. Pingjiang County is on the spring favorable conditions and high yielding experience to talk about the feasibility of spring. ; First, the favorable conditions of spring 1, meteorological factors. Currently used