Another advantage of steam, as contrasted to chemical sterilants, is that a crop can be planted almost immediately . 蒸汽比其他化学消毒剂的好处是,消毒后马上就可以种植作物。
Soybeans have been grown continuously in some areas without serious losses in yield when fertility is maintained . 当肥力得到保持的时候,在某些地区连续种植大豆,不会严重减产。
If closely-allied forms or varieties are planted near each other, it is hardly possible to raise pure seedlings . 如果近缘的品种或变种种植在很相近的地方,往往难得到纯粹的种子。
"how we wheat growers are exploited and trapped and deceived at every turn," observed magnus sadly . “我们这些小麦种植者啊,还不是到处受人剥削,作弄,欺骗!”曼克奈斯凄惨地说。
For twenty-five years the government of thailand has supported schemes to encourage farmers to replant rubber trees . 二十五年来,泰国政府一直支持关于农民种植橡胶树的各种鼓励性规划。
As soon as growers learned to bud or graft, they chose as scion sources the trees that were superior for their area . 种植者一旦知道了枝接或芽接,他们就把当地的优良植株选来作接穗材料。
Production of cowpeas grew by more than 250 percent during the 1970s, while the area planted expanded by almost 70 percent . 在七十年代中,豇豆的生产增长了25以上,而种植面积几乎扩大了70。
Plantation gangs began to oust the patch cultivation of the labourer serf in the case of some staple products . 在某些主要农产品的种植上,大农场上的伙役奴隶开始撵走了耕种小块土地的农奴劳动者。
Some of these conditions also pertain to midwestern grain farms, which are larger than family farms in the mixed-farming areas . 中西部的粮食农场也具有某些类似的情况,这些农场比混合种植区的家庭农场要大。