In the paper the sequence of forest tending operations in black locust stands is proposed, based on results of long-term stand structure and forest yield trials.
本文根据林分结构和森林产量长期实验林的研究成果，提出了刺槐林的抚育作业次序。
On the other hand, trials at CIMMYT's principal wheat-breeding station at Obregon in Mexico indicate a slowdown in potential yield growth to only 0.4% a year.
可另一方面，国际玉米和小麦改良中心在墨西哥奥布雷贡的小麦育种站做的试验表明，小麦产量的年增长率可能降至0.4%。
This rank analysis method was a practical and forthright data analysis method evaluating crop varieties yield in regional trials.
秩次分析法对作物品种区域试验中产量性能的评价是一种实用、可行的数据处理方法。
Field trials were made on winter wheat, maize and rape, the results show a sharp yield increase by the application of these sludge fertilizers.
加工复合微生物肥料。对试制的污泥肥进行冬小麦、玉米、油菜施肥试验，结果表明污泥肥可使作物大幅度增产。
The non-balance data of the yield characters of seedless watermelon varieties(lines) in the regional trials during 2002~2005 in Hubei was analyzed using rank analysis method.
对2002～2005年度湖北省无子西瓜区域试验中参试品种（系）的产量性状的非平衡资料进行了秩次分析。
Field trials show that calcium fertilizer is effective to increase crop's yield, avoid disease and improve quality.
通过大量的农田试验说明钙肥对作物增产、防病和改善品质的作用。
Wheat quality traits were analyzed according to yield performance of wheat lines and registered varieties in regional trials between 1998-2003 in Shandong province.
根据1998 ~ 2003年间山东省小麦高肥区试品系和审定品种的试验结果，分析了山东小麦品种品质性状特点。
The field trials were done to study on the effects of nitrogen amount on the yield and nicotine content of sun-cured tobacco.
通过田间试验，研究了不同施氮量对晒烟烟叶产量和烟碱含量的影响。
Longer studies or trials in less highly educated populations with poorer diets could yield different results, she said.
她说，如果进行更长时间的研究，或者对教育程度不太高、饮食摄入情况不太好的人群进行试验，可能会得出不同的结果。
Field trials show: compared with common NPKs, specialty fertilizers increase the yield of wheat by 5.9%, rape seed by 7.2%, rice by 7.3%, vegetable by 9.1%, and the application frequency is decreased.
田间试验表明：施用腐植酸系列专用肥与普通复混肥相比，小麦平均增产7.2%，油菜平均增产7.2%，水稻平均增产7.3%，蔬菜平均增产9.1%，且可减少施肥次数。
Why do you want to improve the yield? Don't you have enough protein for crystallization trials?
（你为什么想提高产率？已有的蛋白不够你做初步的结晶实验吗？）我回敬道。
Why do you want to improve the yield? Don't you have enough protein for crystallization trials?
（你为什么想提高产率？已有的蛋白不够你做初步的结晶实验吗？）我回敬道。
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