摘要
Based on the principles of system engineering,economics theory and local conditionof production,studies carried out by taking“quadratic-regression-orthogonal-rotational” and ran-domized complete block designs to determine the Optimal Agronomical Practices Package（OAPP）for Wheat Modelized Cultivation Management（WMCM）by system decision-makinganalysis.The OAPP was expected to meet various goals of different levels of yield and economicbenefit of middle and high fertility land in Beijing area.Taking cultivar JINGDONG-1（"JD-1"）asan example,the OAPP for grain yield≥6750 kg/ha and net benefit≥360 US （?）/ha was consist-ed as follows:density=195 plants/m<sup>2</sup>;spring irrigation times=4（stem elongation,booting,flowering,and 20 days after anthesis）;fertilization=150-188 kg N/ha,113-128 kg P<sub>2</sub>O<sub>5</sub>/ha.
Based on the principles of system engineering, economics theory and local condition of production, studies carried out by taking 'quadratic-regression-orthogonal-rotational' and randomized complete block designs to determine the Optimal Agronomical Practices Package (OAPP) for Wheat Modelized Cultivation Management (WMCM) by system decision-making analysis. The OAPP was expected to meet various goals of different levels of yield and economic benefit of middle and high fertility land in Beijing area. Taking cultivar JINGDONG-l('JD-l')as an example, the OAPP for grain yield 2≥6750 kg/ha and net benefit≥360 US $ /ha was consisted as follows: density =195 plants/m2; spring irrigation times = 4 (stem elongation, booting, flowering, and 20 days after anthesis); fertilization = 150-188 kg N/ha, 113-128 kg P2O5/ha.
出处
《华北农学报》
CSCD
北大核心
1993年第S2期110-117,共8页
Acta Agriculturae Boreali-Sinica
