-
()
-




@Mail.ru .
[ ]

^: 06-12113 2012 N 5
^: .. - .-. ; .. ; ..; ..
^: [ ]
^: . . . . . . - , 2012; N 5. - . 13-16
^: 2012
^: . ..-.:.16
+

^: , . , , . 5 3 . . . . 3 - . 10,3 11,3 /, - 6,8 9,0 /. 131,0 237,0 / 30,0-54,0 / . , , . , . 11,6-26,9%, .

aref2 There has been studied the influence of different unconventional grasses in comparison with widely cultivated legume and non-legume crops on the physical properties and the nutrient soil status, as well as on coming to soil a fresh organic matter in the form of crop remains and root remains. A change in the content in soil of humus, nitrogen nitrate, available phosphorus and exchange calcium for the phytoameliorative period under crops in the grass link of the field crop rotation has been found. The influence of 5 legume species and 3 non-legume perennial grass species on the fertility of the south chernozem was observed. The advantage of the untraditional crops in comparison with the traditional legume crops and non legume grasses for the soil increasing fertility has been proved. These crops were analyzed for their influence of the spring wheat yield productivity. There is the advantage of the legumes in comparison with the non-legume crops. It is concluded that the cultivation of perennial grasses in three years enriches the soil with fresh organic matter in the form of root-crop residues. After legumes their quantity was from 10.3 to 11.3 t/ha, after non-legume - from 6.8 to 9.0 t/ha. After legumes the quantity of nitrogen with straw was from 131.0 to 237.0 kg/ha, after a non-legume - from 30.0 to 54.0 kg/ha. The yield productivity of spring wheat after birds-foot trefoil was higher than after sainfoin and similar to alfalfa. Non-legume crops (hill mustard, dock stern) as grain precursors gave way to legumes, but surpassed awnless brome grass. Yield of spring wheat increased by 11.6-26.9 per cent compared to awnless brome grass.

^TRN: 1283823
^:
^:
+



        

1998-2016 ©