annual crops

N fixing Capacity and After effects of Annual Pulse Crops

一年生豆类作物固氮力及后效的研究

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If the biennial cycle is broken for one year the trees normally bear annual crops subsequently.

如果一年里打破了大小年的循环周期,植株以后就可正常结果.

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Annual ryegrass was the better preceding crops of rice and HPR.

多花黑麦草是水稻和杂交狼尾草较好的前作。

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In the poor soil, 1/ 3 of total amount of N in annual pulse crops comes from it and 2/ 3 from the air.

在瘠薄的土壤上，一年生豆类作物植株总氮量约1/3来自土壤，2/3来自空气；

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The study shows that there is a great deal effects of the annual crops on the growth of the perennial forages in the first and second year under the condition of lack of irrigation and the steppe climate on Qinghai Lakeside.

初步研究结果表明，在青海环湖地区草原性气候区土壤缺乏灌水的条件下，油菜对多年生牧草第1～2年生长的影响最小，其次是对燕麦、青稞的影响最大。

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Liming is a traditional and effective method to amend acid soil. Previous studies mostly focused on annual crops, but rarely on the perennial fruit trees.

施用石灰是一项传统而有效的酸性土壤改良措施，而以往的研究多集中在一年生作物上，对于多年生果树研究较少。

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Developing and rolling out new higher-yielding strains is much easier and quicker for annual crops like wheat than for perennials such as palm trees that take time to mature and will bear fruit for many years.

开发和种植新型高产品种对小麦这种一年生作物会有立竿见影的成效，而棕榈树这种多年生植物需要很长时间才能到达成熟期并且数年之内都可产出棕榈油。

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A study on the optimal harvest time of annual forage crops

一年生饲用作物最佳刈割期的研究

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Sand fixation effect of annual crops mixed with perennial ammodyte cross-line

一年生农作物与多年生沙生植物混播网格的固沙作用

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The citrus trees are woody perennials, unlike annual crops. It has unique natural features, and its production changes as the tree get older.

柑橘树属于多年生木本植物，不同于其它一年生的农作物，有其独特的自然特性，不同树龄段的产量差异性较大。

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