The results showed that the test-tube plantlets with normal root system,been cultured for 30-40 d,could get a high transplanting survival rate,and suitable media were the compounding of fine river sand,soddy soil and garden soil(3∶3∶4),and the seedlings should be managed according to the principles of controlling water,increasing illumination and decreasing temperature by degrees.
Using four virescence species (Caragana intermedia,Tamarix austromongolica Nakai ,Platycladus orientalis,Populus cathayana) in the Mountains Adjacent to Lanzhou City as experiment materials and under nature controlling soil water environments, this paper mainly measure some water indexes and biochemical indexes of four tree species in different soil water, and deals with the photosynthesis characteristics and configuration properties of four tree species.
ansu and Amorpha fruticosa L. seedlings with different concentrations of natural brassinolide and simulating soil drought by using potted-seedlings to controlling soil moisture, some indexes for drought-resistance about water status, photosynthesis characteristic, antioxidative protective system, stability of plasma membrane, osmotic adjustment substance, growth and biomass were measured and analyzed.
、山杏(Prunus armeniaca L. var. ansu)和紫穗槐(Amorpha fruticosa L.) 苗木进行蘸根和叶面喷施后，采用盆栽控水模拟土壤干旱环境方法，测定和分析了苗木的水分状况、光合特性、抗氧化保护系统、质膜稳定性、渗透调节物质、生长状况和生物量，探讨了天然油菜素内酯对三树种苗木抗旱性的影响。
The research on the controllability of quantum systems is first introduced, then the study on the quantum open-loop control methods often used for controlling simple quantum systems is analyzed briefly.
A barcode-based position controlling method for high-speed conditions was introduced to deal with the position control in some conditions where it cannot be done quickly and precisely using traditional methods.
To directly use a virtual surface model for action editing and movement control, a general method for creating virtual actor skeleton models and controlling movement is presented.
The elevation, slope aspect, and slope degree were found to be dominant features controlling landscape pattern.
The significance and prospect of the alkaloids in controlling forest insect pests were also discussed.