If possible, in the year before you plant potatoes, plant a cover crop to improve the soil and the potato production.

如果可能的話日韩精品视频综合网在线观看，在中土豆的前一年種一種覆蓋作物來改善土壤一级电影久久，提高土豆產(chǎn)量。

During this period of early establishment, the addition of a cover crop or nursegrass may be necessary to reduce potential soil erosion.

在根系建立初期国产黄色在线，我們需要一些地表植物或者保養(yǎng)草來防止減少土壤的流失熟妇的天堂av。

Soil management between rows was with a permanent cover crop of fescue while the tree rows were treated with herbicide in a strip 1 m in width.

土壤管理與一個(gè)永久的封面一排排的農(nóng)作物的果樹行間草草地處理除草劑草甘膦1米寬條。

The testing results indicate there is a visible regulating effect in soil temperature with crop residue cover.

試驗(yàn)結(jié)果表明久久不免费视频1，殘茬覆蓋對(duì)土壤溫度有明顯的調(diào)節(jié)作用2020国产精品对白露脸，5、10加勒比一本大道日韩在线观看、15永久免费A片在线看视频、20 cm各層有覆蓋相對(duì)于無覆蓋分別增溫1.5~2.1℃久久66热人妻偷产精品3D动漫、0.9~1.2℃久久久久久一国产精品区、0.2~0.9、0.4~0.8℃野花社区视频www日本，隨著土壤層的加深操操黄色网站，覆蓋對(duì)土壤溫度的調(diào)節(jié)作用越來越小自拍日韩精品第18页视频在线观看。4月20日至6月15日前后，隨著覆蓋量的增加美女双腿张开被操出白浆，土壤溫度開始升高日韩欧美一区二区在线观看，但覆蓋量增加到一定程度后，土壤溫度將下降91绿帽人妻网站，在6月20日以后国产日韩AV免费无码一区二区三区，隨著覆蓋量的增加，土壤溫度逐漸降低精品日韩视频，其中30%覆蓋相對(duì)于無覆蓋亚洲俄罗斯1级，降低1.1~1.5℃，50%~80%覆蓋降低2~3.6℃国产亚洲日韩入口AV，而表土層降低幅度最大高清无码一级国产黄色片，沿深度方向幅度越來越小。

For testing the effect of crop residue cover on soil temperature at various percentages of covered areas,the test plot was established in west rainless region of Heilongjiang Province.

在黑龍江省西部干旱區(qū)建立不同殘茬覆蓋對(duì)土壤溫度影響試驗(yàn)區(qū)国产乱伦一级黄片，采用W QG-16午夜又爽又色的高清视频。

Either way, it is important to establish good ground cover to avoid the loss of soil through erosion.

兩種方法，重要的是建立更好的土地復(fù)蓋物欧美国产一级黃片，以避免因土地侵蝕而流失亚洲精品三级片网视频。

Either way, it is important to establish good ground cover to avoid the loss of soil through erosion .

不管采用哪種方式，建立良好的土地植被一级片播放，避免由于沖蝕而造成的土壤流失十分重要成a人一级性爱。

If a test finds that soil has too much lead, you might be advised to remove the soil or cover it with sod grass.

如果檢測(cè)表明土壤含鉛量很高，就需要把這部分土壤移走或者用草皮草蓋住它免费视频好爽好湿叫国产。

If a test finds that soil has too much lead, you might be advised to remove the soil or cover it with sod grass.

如果檢測(cè)出土壤中含有大量鉛在线观看免费观看国产黄p，建議把那些土壤移除，或者用草皮覆蓋久久精品亚洲国产一区二区。

Planting winter cover crops, such as rye grass, reduces nitrous oxide emissions and boosts levels of organic matter in the soil, which makes for more fertile soil.

種植冬季復(fù)蓋作物成年人视频网址，如黑麥草、氧化亞氮排放量降低了層次人操人人人干，增強(qiáng)了土壤有機(jī)質(zhì)男女交配视频免费观看，使得更多的沃土。