论文部分内容阅读
干旱对张杂谷的光合作用、呼吸机制、氮素代谢及生长发育和产量都有明显影响。干旱发生后,植株根系的生长受到抑制,吸收水分和矿物质的能力下降。干旱影响叶片的扩展,使叶片失水、气孔关闭。光合作用降低,植株制造和积累养分减少,缺水还促使老叶片的衰老和枯黄,使植株生长缓慢、植株矮小,灌浆的速度减慢,粒重降低,最终导致减产。1节水栽培适宜的播种期对于张杂谷的产量是必需考虑的因素。在适宜土壤湿度和温度下播种,张杂谷的发芽、出
Drought has a significant effect on photosynthesis, respiration mechanism, nitrogen metabolism, growth and yield of Zhang Zha Gu. After the drought, the growth of plant roots is inhibited and the ability to absorb water and minerals is reduced. Drought affects the expansion of the leaves, causing the leaves to dehydrate and the stomata to close. Reduced photosynthesis, plant production and accumulation of nutrients to reduce water shortage also contributed to the aging of the old leaves and yellow, so that plants grow slowly, short plants, grouting slowed down, grain weight decreased, eventually leading to reduced production. A water-saving cultivation suitable sowing date for Zhang Zugu yield is a necessary factor to be considered. Sowing in suitable soil humidity and temperature, Zhang Zhagu’s germination, out