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早稻对外界环境条件反应的一般特点是感温性强。一生需要的活动积温比较稳定。其各生育阶段又分别有不同的要求,以分蘖期为例,发根最低温度要在15℃以上,最适32℃,分蘖最低温度更要求高些,最适30℃;当然,还需要光照、空气等。显然,早稻的早发就是栽培措施与这些外界条件相适应的结果,其规律是不以任何人们的意志为转移的。过去我们在主观愿望上总是想争早发,每年都提出过“插后三天发新根,五
The general characteristics of early rice response to the external environmental conditions is the strong sense of temperature. Activities need life more stable temperature. For example, the minimum temperature of hairy roots is above 15 ℃ and the optimum temperature is 32 ℃. The minimum temperature of tillers needs to be higher, and the optimum temperature is 30 ℃. Of course, it needs light , Air and so on. Obviously, the early onset of early rice is the result of cultivation measures compatible with these external conditions, the law of which is not shifted by any one’s will. In the past, we always wanted to strive for early warning in subjective desires. Every year, we proposed "