林网生态场内玉米的经济产量

在林网生态场内,生态因子的强度在水平方向上呈梯度分布,本文定位,定量研究了生态梯度对玉米（ＺｅａｍａｙｓＬ．）经济生产的影响,结果表明,玉米的经济产量在蜡熟期以前主要受小气候因子的影响,空气温,湿度高,风速低,促进经济产量,蜡熟期以后,土壤温度成为玉米经济产量的限制因子,在适当范围内,地温低有利于延长成熟期,提高籽粒产量,某一时期生态因子对玉米的影响环仅可以在后的生育期中反映出来,具有滞后效应,而

Economic Production of Zea mays in Shelterbelt Network Ecofield

In the shelterbelt network eec field,the distribution of the ecological factor intensity in level direction formed to be the gradient patterns. The effect of the ecological gradient on the economic productiona of Zea mays L. was studied in this paper. Results showed th t:The economic production of Zea mays wasaffected by the micro climate factors mainly before the "wax--like seed'stage,higher air temperature andhumidity,lower wind speed promote the economic production Isoil temperature became the limiting factor after the wax-like seed stage,in due range,lower soil temperature could delay the maturity and promote the economic production. The effect of ecological factors in certain period not only affect the plantdevelopment stage after that,have the time-lag effect,but also maintain the effect in the whole growingseason,have the remaining effect. Among the ecological factors,temperature was the key factor affectingthe economic production of Zea mays.