| 摘要 |
FIELD: agriculture. ^ SUBSTANCE: method involves determining dose of nitrogenous fertilizers introduced and amount of precipitations for May; determining yield of winter wheat to be forecast from mathematical dependence: Y=-2.39+0.112N+0.07Pm-0.0008N2-0.0005Pm2, R=0.82, where Y is yield of winter wheat, t/hectare; N is dose of nitrogenous fertilizers of from 31 to 93 kg/hectare of effective substance; Pm is amounts of precipitations for May of from 18 to 104 mm; R is coefficient of multiple correlation. ^ EFFECT: reduced labor intensity and increased precision in forecasting yield of winter wheat. ^ 1 tbl, 1 ex |
