麦田

Shenyang Research Institute of Chemical Industry, Shenyang 110021, China Abstract: Spectrophotometric analysis showed that the peak absorbance for food dye of Allura Red and biological dye of Ponceau-G occurred at 501 and 510 nm. In sunlight after 2, 4, 6, 8, 10 hours, the decomposition rates of Allura Red and Ponceau G were between 2.4 to 5.8% and 3.4 to 10.8%, so they are stable in sunlight. The recovery rates on cottons and glasses were very high, so they are easily recoveried from targets. Further studies showed that the recovery rates of two dyes on the leaves of wheat, cabbage, cucumber and tomato were different, so it need previously determine the recovery rate of tracer on the target crop to adjust the result. Field experiment showed it was easy to measure the pesticide spray distribution of high volume spay and low volume spray to use Allura Red and Ponceau-G as tracers.

沈阳化工研究院，沈阳 110021 摘要：光谱分析表明，食品染色剂诱惑红和生物染色剂丽春红-G的最大吸收波长分别为501 nm和510 nm ；在连续2、4、6、8、10 h阳光照射下，分解率分别在2.4%~5.8%和3.4%~10.8%之间，见光稳定性良好；两种染色剂在棉花叶片和玻璃片上的洗脱回收率都很高，说明易于从靶标上洗脱下来；进一步测定表明，两种染色剂在小麦、甘蓝、黄瓜、番茄叶片上的洗脱回收率各不相同，所以对准备进行测试的作物应先做一次洗脱回收率试验，用以校正测试结果；田间应用表明，用两种染色剂做示踪剂，可以方便地测定常量喷雾和低容量喷雾过程中农药在麦田的沉积分布情况。

The empirical analysis, using Probit Model, showed that the extension efficiency of the technique was obviously affected by following factors: income and cost, yield increase, farmers" age and education, non-agricultural income, farmer"s social status, distance from town, frequency of farmers contact with media and agricultural technicians.

运用Probit模型对超高茬麦田套稻技术推广的影响因素进行分析，结果显示亩增收节本、亩增产量、户主年龄、户主受教育时间、非农收入、是否干部、离镇距离、媒介频率、与农技人员接触次数对该技术的推广有显著影响。

In this study, the Probit Model was applied to conduct an empirical analysis of factors related to extension of the technique, and following results were obtained.

本文通过对超高茬麦田套稻技术推广的影响因素及推广途径的研究，分析不同推广途径下成果转化效率。

The slopesbetween the mountains and the water usually resemble the thick colors of farmland - the cornfields endless variations of yellow and green, plus the colors of the "purple medic" andfreshly digged red soil!

半坡上，山与水之间，往往是颜色更浓厚沉重的田地——麦田就有从黄到绿的无穷变化，何况还要加上紫色的苜蓿和刚挖开的新鲜红土！

Images taken from the real wheat field (3～5 leaves seedling stage and within the different numbers of crop row) were used to test the novel solution of weed detection in the laboratory.

在实验室内利用实地采集的3～5叶期、不同作物行数的麦田图像对该方法进行了测试。

The spraying control system aiming at weed based on machine vision was designed and developed. The index of 2G-R-B is used for segmentation and the method of improved pixel lateral histogram is used for extracting the center of crop row,the method of threthold is also used for identificating between-row weed and BP ANN based on fratal and texture is used for identificating in-row weed. PLC correspondence and performing procedure is desi -gned and developed.

设计和开发了基于机器视觉的麦田除草剂对准喷药控制系统，该系统的视觉子系统首先用过绿的2G-R-B进行植物与土壤背景的分割，其次用改进像素直方图法识别作物中心行，用阈值法识别行间杂草区域，用BP神经网络基于分形和纹理的共同特征识别行内杂草区域，设计并开发了计算机与PLC的通信程序，设计了PLC的运行程序。

Thus,the effect of P fertilizer applied every other row space may bebetter than conventional method.

因此，在麦田施肥时，应根据前者的结果，实行隔垄背施磷，其肥效会最高。

I'd just be the cathcher in the rye and all.

我是说将来要是能XXX的让我自由选择的话，我只想当个麦田里的守望者。

That's all I do all day. I'd just be the catcher in the rye and all.

这就是我成天要做的事情，就做个麦田里的守望者得了。

"The Catcher in the Rye" is a reflection of the growth of young people to mature novel.

麦田里的守望者》是一部反映年轻人走向成熟的成长小说。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。