Study On The Growth Rule And The High-yield And High Quality Of Vegetable Soybean Film Mulching

In this study, fresh bean 1 used as materials, under the field irrigation condition, study on effect of nitrogen, density and chemical control on the growth rule, nitrogen phosphorus kalium absorption distribution and the root system growth and development of vegetable soybean with film mulching. The main conclusions are as follows:1.The film mulching cultivation promotes living early sends quickly vegetable soybean root and increasing the root dry weight, and its root distributes shallowly. The plant character, dry matter weight, leaf area and leaf area index and the yield character of vegetable soybean film mulching are obviously higher than that of open ground, but the open field vegetable soybean's protein content is actually higher than the film mulching vegetable soybean. The film mulching soybean advance to picks for 4 days compared with the open ground vegetable soybean, the yield increases 1544.97kg/hm~2, increases yield 11.82%.2.Application nitrogen promotes obviously vegetable soybean plant film mulching to nitrogen phosphorus kalium absorption accumulation, raises the soybean plant nutrient accumulation speed and distributes to the pod grain, increases dry matter weight, pods per plant, seeds per plant and Fresh100-seed weight of vegetable soybean plant, accordingly raises the output. When the flowering season application nitrogen for 90kg/hm~2, the vegetable soybean plant to nitrogen phosphorus kalium absorbed dose is highest, and the fresh pod yield is 17002.10kg/hm~2,3.we found that the leaf area index is moderate and photosynthetic potential become large after podding, dry matter accumulation rate is fast, final accumulation amount and distribution rate to grain are high under the 135 thousands plants per ha treat, fresh pod yield is the highest( 15185.50kg/hm~2).4.Under the film mulching condition, using 450g/hm~2 Douge+120g/hm~2 Douge companion to progress chemical control one time in the flowering season, plant obvious dwarfing, increase stem thickness and chlorophyll content, delay leaf senescence in late, increases dry matter accumulation and pods, seeds and seeds weight per plant, raise fresh pod yield 9.54%.5. Under the film mulching condition, vegetable soybean density is 135,000plant/hm~2, nitrogen fertilizer is 90kg/hm~2 and the flowering season uses 450g/hm~2 Douge +120g/hm~2 Douge companion to progress chemical control one time, the fresh pod yield may reach above 14000kg/hm~2.