The seedlings, puny and ankle high when they should be knee high by this time of year, are his second planting.

这些幼苗是他第二次播种的，往年这时候应该到膝盖高了，可现在小得才到脚脖子。

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A second group of biotechnologies can be used for planted forests that provide industrial raw materials on a large planting scale.

第二组生物技术可用于提供工业原料的大规模人工种植林。

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Second-degree polynomials equation of maize(Zea Mays L. ) grain yield with both planting density and nitrogen fertilization was established by means of regression analysis.

本文从不同种植密度和施氮量对玉米籽粒产量的影响，建立了二次多项式回归方程。

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Now they can harvest in February instead, leaving enough time for a full second crop before the September planting.

ECONOMIST: Brazilian agriculture

Bowman argued that he should be able to use those second-generation seeds for a natural and foreseeable purpose of planting and that Monsanto's patent rights were exhausted after its initial sales of the seeds.

MSN: Food safety group calls for court to limit GMO seed patents