The frost injury index and advection cold injury index of tropical herbage and the hot injury index of temperate herbage are found.
分别找到了热带牧草的霜冻指标、平流寒害指标以及温带牧草的热害指标。
Based on investigations, researches and scientific experiments, the cool injury index and frost index to crops that fit the fact of heilongjiang Province are analyzed and obtained.
在调查研究和科学实验的基础上，分析出符合黑龙江省实际的农作物冷害指标和霜冻指标。
Based on investigations, researches and scientific experiments, the cool injury index and frost index to crops that fit the fact of heilongjiang Province are analyzed and obtained.
在调查研究和科学实验的基础上，分析出符合黑龙江省实际的农作物冷害指标和霜冻指标。
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