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1·Increasing the applying amount of nitrogen and phosphorus could all promoted nitrogen and phosphorus content in plants and total dry matter weight per unit area.

增施氮磷用量，均可提高油菜植株氮、磷含量和单位面积的总干物重。

2·Four components contribute to rice grain yield including the panicles per unit area, the number of spikelets, the percentage of, and the weight of ripe grains.

四个水稻籽粒产量构成因素为单位面积穗数、小穗数、成熟籽粒百分数和成熟籽粒重量。

3·Moreover, the application of angle-count cruising to calculating the stand volume, standard stock number, stand weight and stock number per unit area, is discussed.

本文探讨了角规测树法在测算毛竹林分蓄积量、标准株数、林分重量及单位面积株数中的应用。

4·Miniature evaporator is a compact exchanger with small volume, light weight, and big heat transfer area per unit of volume. It is an important application in the field of cryogenics and refrigeration.

微型蒸发器是一种体积小、重量轻、单位体积换热面积大的紧凑式换热器，在制冷低温技术领域中有着重要应用。

5·The results indicated that the grain per spike, seed setting rate, spikes per unit area and thousand grain weight had great contribution to the yield, especially grain per spike and seed setting rate.

结果表明：每穗粒数、结实率、单位面积穗数与千粒重对优质稻产量形成贡献较大，尤其是每穗粒数、结实率；