Because of the activity of mankind that do to the transference and retroflexion of grains of soil, the intensity of soil erosion and nutrient losing has been enhanced, whether it is in the flat, farmland or woodland.

2~(137)Cs在土壤剖面中隨深度的增加而呈下降趨勢1024手机免费视频，在非耕作土和未擾動的土壤主要分布在土壤剖面的上部av激情综合，并富集在土壤表層之間。

According to the tillage quality was guaranteed for the minimal tilth depth and the sgnthesize property was guaranteed for the specifed tilth depth.

分析了驅動式圓盤犁耕作深度問題：根據(jù)土順利翻轉決定的最大耕深特级黄色一级无码黄色毛片在线免费观看、為保證耕作質量限制的最小耕深以及綜合性能最優(yōu)時的額定耕深久久黄色精品视频。

Compared with upper layers, soil temperatures variation were lag in deeper layer.

所有耕作措施土壤溫度隨深度的增加出現(xiàn)滯后現(xiàn)象。

It showed that during the sowing time of spring wheat, the variations of soil temperature in three tillages pattern were consistent. The soil temperature that 5 cm under ground of NTS was 0.7~4.6℃ and 1.2~6.1℃ lower than CTS and CTB, respectively.

結果表明八插八插黄色美女视频，在春小麥的播種期影音先锋日韩资源免费在线观看，3種耕作方式的平均日均地溫變化趨勢一致，均隨著土壤深度的增加而減小在线国产黄色网址，且在同一時間NTS的地溫小于相同土層CTS和CTB欧美A片视频精品，NTS在5cm處14：00的地溫比CTS和CTB分別低0.7~4.6℃和1.2~6.1℃。

different cultivars：不同品種

different applications at different soil ==> 分地力施肥 | different cultivars ==> 不同品種 | different depths of plowing ==> 不同耕作深度