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玉米顶凌播种好处多唐山地区部分农民素有顶凌（３月底－４月初）播种玉米的习惯。据调查其好处如下：一、苗齐３月底至４月初是春季耕层土壤含水量最高，和土壤耕层温度一般能满足玉米种籽发芽生根的时期，加之这时早晚气温还比较低，幼芽钻拱土迟缓，所以，幼苗能避过晚...
Top Lingling sowing corn benefits Some farmers in the multi-Tangshan area known as Dingling (end of March - early April) the habit of sowing corn. According to the survey, its benefits are as follows: I. Miao Qi is the period from the end of March to the beginning of April which is the highest soil water content of spring tillage, and the temperature of soil tillage generally satisfies the germination and rooting of corn seeds. In addition, the temperature is still low at this time, Bud drilling arch slowly, so, seedlings can avoid the late ...