گزارش نهایی بررسی میزان مصرف کودهای شیمیایی در زراعت نخود دیم

To investigate the effect of different levels of fertilizers "NPK" on peas in dryland farming, this experiment was done in a randomized blocks with four replications. The amount of fertilizers used was three levels of N.P.(0, 15, 30) Kg/ha and K. (0, 15) kg/ha. The location was at "Badranlou" 35 km. West of Bojnord and "Najaf Abad" 30 km. N.W. of Ghoochan to four years from 1984-87. The soil is silty- loam with alkaline tendency with a slop of 8- 10 percent. The soil belong to the family of "fine, loamy, mixed, mesic" and repersents the soil in above location. The results are as fallow: 1- In both locations (Badrlou and Najaf Abad) the reactions of peas towards "P" was totaly significant. The effects of "K" was in significant. 2- In general the best formula in both location was "N15 P30" with a production of 651.31 with the usage of "N" and 611.56 with the usage of "P" in heetop. The less production was due to control blocks with 497.94 and 525.75 kg/ha. Knowing the mean production of the area 291.8 kg/ha. We had 359.51 and 319.76 extra production in Badrlou and Najaf Abad. 3- With the usage of soil conservation system, corect planting method, time and saring the soil moisture the dependency of plants to rainfall will redune and the reactions of crops to wards fertilizer with increase.