|
2007 in Hutubi County Dafeng an eight- cotton cropping were used on spring wheat harvest live and re-broadcast in two different planting green manure cropping patterns , studied different planting green manure biomass, plant nutrient content and different after green manure on soil nutrient supply situation ; 2008 Green Manure in the soil of all the cultivation of cotton , cotton stubble of different green manure fertility traits and cotton yield . The main results are as follows: 1 , sowing green manure biomass on soil fertility : sweet clover , vetch , milkvetch are three kinds of sweet clover green manure in biomass and nutrient absorption maximum ; three kinds of green manure cropping after cotton soil organic matter and available nutrients have a certain influence , adsurgens on soil available phosphorus and potassium has a strong enrichment . 2 , spring green manure stubbles on cotton growth and yield of cotton : Green Manure effects on cotton growth effect is remarkable , green manure dry matter accumulation in cotton stubble and plant nutrient uptake and yield components are superior to cotton cropping . This set of experiments cotton production size is: adsurgens → Cotton > Cotton Melilotus → > vetch → Cotton > Cotton cropping CK. 3 , re-sowing green manure biomass and effects on soil : sweet clover , rapeseed , sunflower, soybean four kinds of re-sowing green manure biomass and plant nitrogen , phosphorus plants , plant potassium respectively Melilotus , soybeans and oil Aoi 's highest ; Green Manure after fertilization on soil have some effect , rape , sunflower -rich potassium is more prominent. 4 , re-sowing green manure stubbles on cotton growth and yield of cotton : Cotton Green Manure Crops various physiological indicators are better than cotton cropping . Sweet clover green manure cropping cotton production up to 4071.04kg/hm ~ 2, increased by 48.8% than that of CK ; followed by soybean , sunflower, rapeseed .
|