A Mathematical Model of Integrated Agricultural Measures for Wheat High-Yield in Dry and Meagre Land of Heilonggang Area

doi:10.3321/j.issn:1000-7091.1990.03.022

Abstract

Abstract: A model for wheat high-yield cuiltvation in dry and meagre land of Heilonggang area set up with gyrating design not only reveals the yield effect of five agronomic measures, but also can be used to reduce the highest theoretical yield under the testing conditions and provide abundant informations for adopting the best measures of winter wheat production.In these measures the order of five factors of agricultural measures according to their contributions to yield is as follows. PNdepth of spreading manurebasic seedling populafion per murow spacing. As to the cultivating measures for high-yield more attention must be paid to application of fertilizers and depth of spreading manure. Through francy analysis thebest agronomic measures can be worked. If the targets of P is 8.14-8.38kg/mu, targets of N-8.36-9.5kg/mu,depth of spreading manure-16-23cm,basic seedling population-174000-202000 plants/ma,row spacing-16.5-20cm, and other routine cultivation measures, the yield of over 230kg/mu can be achieved.

Key words: Dry and meagre land, Winter wheat, High yield cultivation, Mathematical model

Yuan Fengshan, Liu Jinyu. A Mathematical Model of Integrated Agricultural Measures for Wheat High-Yield in Dry and Meagre Land of Heilonggang Area[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1990, 5(3): 116-122. doi: 10.3321/j.issn:1000-7091.1990.03.022.

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