PCPによる水稲の生育調節に関する研究 : 第2報 PCP処理が水稲稈の諸形質に及ぼす影響

概要

論文の詳細を見る
Studies were carried out to make clear the effect of soil treatment with PCP on some characters of culms subject to lodging, especially by laying emphasis on the physical properties of culms. Bending moment (M), bending stress (σ), section modulus (Z), and secondery moment of inertia (I) were calculated based on the breaking load, culm diameter, and thickness of culm wall. The results are summarized as follows: 1) Increase of lodging resistance by soil treatment with PCP at the end of its effective tillering stage can be ascribed to the increase of secondary moment of inertia (I) caused by the increase in culm diamerer and in thickness of culm wall. 2) On the other hand, the increase of lodging resistance of rice plant by soil treatment with PCP on about 30th day before heading can be ascribed to the increase of bending moment caused by the increase in bending stress (σ) rather than by the increase in secondery moment of inertia (I). 3) Water content in rice plants and the extent of turgor pressure of culms showed decreases after the soil treatment with PCP.
日本作物学会の論文
1969-09-30