the change of varieties

The Review of the Change of Corn Varieties in Tianshui City and Its Future Breeding Thinking

天水市玉米品种的更替及育种工作思路

Different varieties or characters answer for change of temperature independently, varieties of better quality have a little transformation with the change of temperature than varieties of worse quality. Brown rice yield, length of grain and G.

不同品种及不同性状对温度的反应不一样，品质较好的品种受结实期日均温的影响要小于品质较差的品种，糙米率、粒长、G。

Water Resources Protection Forest can buffer the varieties of pH, Sal, Tur and NH4+. But the change of water quality in no forest area always reduce clipping by the rainfall, no buffer, which easy run out nutrient.

水源涵养林壤中流水质中pH、Sal、Tur和NH4~+具有缓冲作用，而无林地壤中流水质变化通常是随着降雨时间的延长快速下降，没有缓冲作用，很容易造成养分流失。

The responsive curves of photosynthesis in mature cherry leaves to the change of photosynthetic active radiation, CO2 concentration and air temperature can be described with quadratic equations, the specific shape of the curves varied with cherry varieties and the ecological factors concened.

樱桃光合作用对光照强度、CO2浓度和温度等单一生态因子水平变化的响应行为均可以用二次方程来描述；响应曲线的具体形状因品种和生态因子种类而异。

It can be seen through the analysis of two varieties Cartland, former component species of different flowering compounds relative to the latter change, the relatively disorderly, which compounds types of neat.

而且通过分析两品种卡特兰可以看出，前者不同花期化合物组分种类相对于后者变化较大，相对较为杂乱无序，后者化合物种类比较整齐。