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土壤水分对谷子结实的影响主要在结实阶段.土壤水分过少或过多,都能显著降低结实率、成粒数和产量.这一时期以保持土壤毛管持水量的70%左右对结实最为有利.供水不足,首先影响根系活性和体内水分状况,从而影响体内外气体交换,降低光合速率和呼吸强度,同时影响细胞膜透性,导致体内物质代谢过程改变,降低有机物质的积累,造成穗部营养贫乏,形成秕谷.土壤水分过多,通气不良,影响根系活性,降低伤流量,抑制体内代谢过程及物质运转,造成穗部营养不足,形成秕谷.
The effect of soil moisture on the fruiting of millet was mainly in the fruiting stage, with too little or too little soil water, which could significantly reduce the seed setting rate, grain number and yield, which was most beneficial to maintain the soil moisture content about 70% during this period. Inadequate water supply affects root activity and body water status first, which in turn affects gas exchanges in vivo and in vitro, decreases photosynthetic rate and respiratory intensity, and affects membrane permeability, resulting in changes in the metabolism of substances in the body, reducing the accumulation of organic matter and causing spike nutrition Poor, the formation of trough Valley soil moisture, poor ventilation, affecting the root activity, reduce traumatic flow, inhibit the body’s metabolic processes and material operation, resulting in lack of nutrition spike, the formation of Hysteria.