The linear correlation regression equation of fetal weight, CR length and fertilizationage were set up.
建立了体重、顶臀长与胎龄的直线相关回归方程。
2
There is no obvious difference of the culm yield between culm cutting age of 4~5 and 6~7 years old in the bamboo stands, which are intensively cultivated by soil digging and fertilization.
The main factors influencing the wheat yield in downland were initial nitrogenous dressing, the amount of nitrogenous fertilizer applied for different leaf age and close fertilization.