经济作物

Of all the economically important plants, palms have been the lea st studied.

在所有的经济作物中，棕榈树得到的研究最少。

We are also interested in developing rice plants with broad-spectrum disease resistance and stress tolerance for agricultural application.

克隆控制植物器官生长、分化的重要基因，研究这些基因的调节功能和它所涉及的调控网络，最终将拟南芥研究成果向经济作物转化。

The structures were studied by IR and NMR. The absorption frequencies of the carbonyl group markedly depended on the coordination no. of the tin atom. The chem. shifts of 119Sn and 13C and the 1J(119Sn-13Sn) coupling constants of the compounds were determine Small structural changes around the tin atom were reflected in the 119Sn chem. shifts. For tributyltin arylcarboxylates, a relationship between 119Sn chem. shifts and Hammett constants of the para-substituents was found. The biol. activities of same compounds have been studied. They may be used as fungicides for fruit.

通过对它们的红外光谱、核磁共振谱(^1^3C， ^1^1^9Sn)的研究，表明羰基红外吸收频率与锡原子的配位数有密切关系，同样分子上的微小变化明显地表现在δ119Sn上，对位取代基苯甲酸酯的δ119Sn与苯环上取代基的Hammett常数之间存在良好的线性关系：δ119Sn=19.11σ+110.612 n=7，γ=0.9955着重研究了部分化合物在经济作物上的抗病原菌能力，结果表明，这是一类具有广谱性的有机锡化合物，抗菌活性优于对比药剂朴海因，接近或相当于多菌灵，它们同时具有较强的除草活性。

After more than 20 provinces and cities nationwide, the use of more than 2000 ha Taejon prove: food crops yield 15-27%, 18-48% yield of economic crops.

经全国20多个省市，两千多万亩大田使用证明：粮食作物增产15-27%，经济作物增产18-48%。

Bamboos, which belong to Gramineae, mainly spread in tropical and subtropical area of Asia, Africa, Latin America and even some bamboos spread in temperate area and frigid zone.

竹类植物是重要的经济作物，属禾本科竹亚科，主要分布在亚洲、拉丁美洲和非洲的热带、亚热带地区，少数分布于温带至亚寒带地区。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。