Research on the harm of the excessive moisture in the soil to the barley and wheat. : I. Harm of moisture in the various stage of wheat growth.

[摘要] I investigated the relation between the growth time and the stage of moisture, by keeping the water below the surface of the soil by 10 cm, for 20 days every 10 days immediately after sowing. The result of this experiment showed that the harm done to the growth and the harvest was remarkable in the following two stages : the period when tiny panicles appeared and 10 days after blooming, the high time of storing nourishment in the seeds, especially starch. This ill effects in mechanism resulted, in the former, in the decrease in the number of ears on one plant, and in the number of grains in one ear, and, in the latter, in the decrease in the weight of 1000 grains.

[学科分类] 农业科学（综合）