e. ,combining technical controls with policies,centering on controls of animal breeding and loss of soil nutrients,enhancing the prevention and control of rural domestic pollution,and controlling the source of non-point agricultural pollution.
Study on the Fertility of Vegetable Soil and Controlling Technique for Pollution of Nitrate in Vegetable Crops Ⅱ.Local Conditions and Fertility Properties of the Chief Type Vegetable Soil in the Suburb of Changsha
if the controlling area of dam-reservoir is about 10% smaller than the total area of the basin, the controlling effect of basin harnessing measure system is not still obvious, though the harnessing degree of other measures is up to 45% or so, the mean precipitation of surface is larger than the storm flood with 35 mm and the maximum daily precipitation is larger than the storm flood with 50 mm.
To study the effect of soil moisture on growth and dry matter accumulation of rice in cold region,controlling water treatments(CWT) for the two rice varieties(Shangyu 397 and Suijing 3) at-30 to-35 kPa and-60 to-65 kPa of soil water potential were carried out during tillering stage,panicle initiation stage,1-10 days after heading,11-20 days after heading,respectively.
The necessity of establishing a system of controlling agricultural stereoscopic pollution on the Chongming Island is elucidated,and it is put forward that integrated innovation will be a strategic choice to fulfill the requirement of controlling agricultural stereoscopic pollution on the Chongming Island.
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.