According to the crustal movement regularity and the characteristics of stratigraphic development and crop out in this area, the paleogeography, paleoenvironment, paleoclimate and paleoecology in the southwest of Henan in Meso Cenozoic period have been basically studied in this paper. 本文根据区内地层发育和出露特点,结合地壳(构造)活动规律,对豫西南中、新生代自然古地理环境(古地理、古环境、古气候、古生态)进行初步研究。
Movement of water in soil, water absorption of crop and regulation of soil moisture were summarized in the paper. 本文综述了土壤水运动、植物吸水和土壤水分的调节。
Due to stronger reproductive ability, shorter generation time, smaller movement area, higher cross rates of near relatives, more acaricides contact opportunity, the problem of mite resistance is more dominant than other crop insect pests. 螨类因其繁殖力强,世代周期短,活动范围小,近亲交配率高,受药机会多,其抗药性问题甚至比其他农作物害虫更见突出。
The movement of soil moisture is very complex that influenced by many factors such as, weather element, soil characteristics and crop growth. 田间土壤水分的变化受到外界气象因素及土壤特性、作物生长的影响,关系比较复杂。
, the observed data from the limited irrigation test for three years are obtained, and then the test data are analyzed with the theory of soil moisture movement and the model of farm crop's evaporation is established under the condition of insufficient irrigation. 采用非充分灌溉条件下的土壤水分运动理论分析试验数据,建立了限额灌溉条件下的作物蒸发蒸腾模型。
Movement of Water in Soil and the Water Absorption of Crop 土壤水运动与作物吸水