The study indicated that applying agricultural comprehensive measures,such as selecting the stubble and right farming technique,cleaning and burning the grass on soil and chemical control,may control weeds in the field of Rumex K-1 effectively.
The main reasons for the evolvement of dominant species in weeds community are introduction of seeds frequently, use of unique herbicides long period, simple farming system and extensive culture practices, fallback in using technique of herbicides, and loosen in integrated measures of agriculture.
Results indicated that the potassium content of tobacco leaf was raised near or over 3% in Jiangchuan, treatments with 3 auxiliary measures significantly raised the leaf potassium content over 3.57%, while in Zhaotong, only one auxiliary measures got this effect, where both the treatments and check had a low leaf potassium contents.
Due to the inadequate agricultural strategies, the newly build terraced fields in the Losses upland in Northwest Shanxi suffered low and unstable yield.
Field experiments in five location and plots with comprehensive agrotechnical measures plus auxiliary measures were conducted to study the raising of leaf potassium content. Results indicated that the potassium content of tobacco leaf was raised near or over 3% in Jiangchuan, treatments with 3 auxiliary measures significantly raised the leaf potassium content over 3.57%, while in Zhaotong, only one auxiliary measures got this effect, where both the treatments and check had a low leaf potassium contents. So...
Due to the inadequate agricultural strategies, the newly build terraced fields in the Losses upland in Northwest Shanxi suffered low and unstable yield. Aiming at increasing the yield, building up the fertility, and achieving high, stable yield of these lands, this experiment had been going on for three years. A complete package of technologies was put forward to achieve the targeted purpose, which is to increase yield in first year, to make maturation of the soil, and achieve high yield in the third year. ...
The study indicated that applying agricultural comprehensive measures,such as selecting the stubble and right farming technique,cleaning and burning the grass on soil and chemical control,may control weeds in the field of Rumex K-1 effectively.