摘要
机械直播条件下，通过二年四因子五水平二次旋转组合设计的试验和计算机模拟仿真，得到影响小麦产量的主要因素是品种和氮化肥用量。大于６７５０ｋｇ／ｈｍ２产量的组合共有８１个，并以９５％水平的置信区间，得到优化的农艺技术措施是：播种期１０月３０日至１１月４日；品种扬麦５号或测５７；有机肥（菜籽饼）用量４７７～７５０ｋｇ／ｈｍ２；氮化肥（Ｓ－Ｎ）用量７８３～９４５ｋｇ／ｈｍ２。
Under the mechanical sowing condition, the results of the authors' two years experiment with four factors, five levels and rotational combinatorial design of quadratic regression, simulation by computer indicated that the most important factors in wheat yield are cultivar and amount of nitrogenous fertilizer. The yields in 81 treatments all are over 6 750kg/hm2. In the 95%'s confidence interval, the optimized agronomical practices are as follows:the sowing time is 30 Oct.￣4 Nov.; the cultivar is Yangmai No. 5 or Ce 57; the amount of organic fertilizer (rapeseed meal) is 477￣750 kg/hm2 the amount of nitrogenous fertilizer (S-N) is 783￣945 kg/hm2.
出处
《上海农业学报》
CSCD
1995年第2期81-84,共4页
Acta Agriculturae Shanghai
关键词
机械直播小麦
农艺措施
优化模型
Mechanical direct sowing
Wheat
Agronomical practices
Optimization model
