Under the irrigationconditions at present, the main limited factor of productivity is soil quality.
在现有灌溉条件下，土壤质量是制约生产力的主导因子。
2
Irrigation amount of corn is optimized under the existing irrigationconditions, and the water saving method of corn is suggested.
优化了灌区现有灌溉模式下玉米的灌溉量，建立了灌区玉米的节水灌溉模式。
3
Based on plant growth analysis theory, this paper studied the plant growth characteristics of winter wheat under sprinkler and surface irrigationconditions.