Straw application, whether straw mulch or incorporated straw with soil, increased the content of soil labile organic carbon and incorporated straw with soil as more beneficial to the increase of the contents of hot water-extractable carbon, potentially mineralizable carbon acid-extractable carbon, readily oxidizable carbon, particulate organic carbon, and light fraction organic carbon.

表施秸稈和混施秸稈均能使土壤活性有機(jī)碳含量增加或顯著增加日本人人射，混施秸稈較表施秸稈更有利于熱水提取態(tài)碳、可礦化碳www.中文字幕在线播放、酸提取態(tài)碳在线免费看黄色乱视频、易氧化態(tài)碳、顆粒有機(jī)碳和輕組有機(jī)碳含量增加亚洲中文经典三级片在线视频，而可溶性有機(jī)碳和微生物生物量碳的變化與秸稈施用方式關(guān)系不大欧美色最新精品视频在线播放。

With the increase of soil organic matter,the mineralizable nitrogen,which is about 95 percent of soil total nitrogen,Was also increased,thus soil can provide more nitrogen.

隨著土壤有機(jī)質(zhì)含量的提高，大約占土壤全氮含量95%的可礦化氮量也隨之增加欧美狂野激情性爱视频在线，土壤供氮

It is concluded that the soil easily mineralizable nitrogen and microbial biomass nitrogen can be taken as the biological ...

在盆栽試驗(yàn)條件下淫秽啪啪啪黄色免费观看网站，土壤易礦化有機(jī)態(tài)氮和種植前土壤微生物態(tài)氮能夠較好地反映土壤氮素的礦化和供應(yīng)能力，可以作為土壤氮素的生物有效性指標(biāo)一级毛片和暴力。

The utilization rate of N fertilizer of the former was significantly lower than that of the later, and the contribution of soil mineralizable N was relatively higher in the former, compared with the later.

前者對(duì)肥料氮的利用率較后者顯著地低人妻少妇一区二区三区在线，且土壤礦化氮在所吸收的氮中的貢獻(xiàn)率也相對(duì)較高。

The significant relationship was also found between the difference of easily mineralizable nitrogen before and after planting with soil net nitrogen mineralizable and plant nitrogen uptake.

結(jié)果表明国内精品久久久久久不卡影院，種植前土壤易礦化有機(jī)態(tài)氮和土壤微生物態(tài)氮以及種植前后土壤易礦化有機(jī)態(tài)氮的變化量均與土壤氮素凈礦化量和植物吸氮量之間存在顯著的相關(guān)性强力打造免费在线。

The results show that the2 0～ 40 cm and40～ 60 cm layers for the red loessial soil and2 0～ 40 cm layer for the red loessial soil had a large amount of easily mineralizable nitrogen besides the0～ 2 0 cm layer, but the easily mineralizable nitrogen was little...

總體上看，紅油土中氮素的礦化和硝化作用強(qiáng)于紅壚土色哟哟天天操。銨態(tài)氮肥在粘粒含量少欧美性爱淫淫网、有機(jī)質(zhì)含量高土層中的迅速減少主要?dú)w咎于硝化，而在粘粒含量多18禁美女裸体露私密部位图片、有機(jī)質(zhì)含量少的土層欧美日韩免费一区二区三区视频播放，主要取決于礦物固定

In summary, MNL and TNL could be used as indices for potential mineralizable N, which are not only suitable for the first season crop but also suitable in evaluating soil N-supplying capacity for two successive season crops; while SON, total soil N and soil microbe N were not good indices for soil potential mineralizable N in short-term.

總體上看，可溶性有機(jī)氮和土壤全氮人人干人人操A片、土壤微生物氮不能作為反映短期可礦化氮的指標(biāo)西西大胆欧美午夜视频；間隙淋洗通氣培養(yǎng)淋洗液中淋洗礦質(zhì)氮、淋洗總氮是評(píng)價(jià)可礦化氮的較好指標(biāo)A片视频在线播放免费，不僅適宜于第一季作物欧美老妇与人性交大战，而且也適用于對(duì)連續(xù)兩季作物土壤供氮能力的評(píng)價(jià)。

Cumulative NH4+-N is a good evaluating index of soil N-supplying not only for the first season crop, but also for two successive season crops. ND is more correct in revealing the potential mineralizable nitrogen when SON was regarded as mineralized N, although cumulative SON alone is not a good index for the potential of mineralizable nitrogen. And cumulative TSN could also be taken as an index for the potential mineralizable nitrogen to some extent.

淹水培養(yǎng)期間銨態(tài)氮累積量是評(píng)價(jià)可礦化氮的較好指標(biāo)日韩不卡一级毛片免费，不僅適宜于第一季作物一本久道在线无码，而且也適用于連續(xù)兩季作物中文成人精品字幕在线视频观看免费；SON累積量不能單獨(dú)作為；SON累積量不能單獨(dú)作為反映可礦化氮的指標(biāo)裸模AT国产精品视频，但用ND反映土壤可礦化氮潛勢(shì)時(shí)老师在办公室被躁在线直播，包括SON后更加準(zhǔn)確；TSN在一定程度上能夠反映土壤可礦化氮免费人成在线观看网。

When initial NO3--N was leached, the correlation coefficients between soil initial NO3--N and mineral N extracted by CaCl2 before aerobic incubation with raygrass nitrogen uptake were decreased to 0.613 and 0.607, respectively, and both reached 5% significantly level. However, the correlation coefficients between mineralizable N extracted by aerobic incubation, soil initial mineral N and mineralizable N extracted by aerobic incubation, N0 and soil initial mineral N and N0 with raygrass nitrogen uptake were raised obviously, and all reached 5% and 1% significant level.

以不包括土壤起始NO3--N盆栽試驗(yàn)植物吸氮量為參比看A级毛片免费网站，通氣培養(yǎng)前CaCl2淋洗起始NO3--N和起始礦質(zhì)氮與五期黑麥草地上部氮素累積量間的相關(guān)性盡管有所降低，但相關(guān)性仍達(dá)5%顯著水平最黄一级黄色自拍偷拍免费小视频，相關(guān)系數(shù)分別為0.613和0.607色悠悠一区二区；而通氣培養(yǎng)30周礦化氮素、土壤起始礦質(zhì)氮+通氣培養(yǎng)30周礦化氮素另类小说人亚洲小说、N0及N0+起始礦質(zhì)氮與五期黑麥草地上部吸氮量的相關(guān)系數(shù)卻明顯提高色伊人欧美，相關(guān)系數(shù)分別為0.718，0.782欧美日韩国产VA在线观看免费，0.688 和0.640妓院性视频，均達(dá)5%或1%顯著水平。

The results indicated that when initial NO3--N was not leached, soil initial NO3--N and mineral N extracted by CaCl2 before aerobic incubation were closely related with raygrass nitrogen uptake, the correlation coefficients were 0.856 and 0.862, respectively, both reached at 1% significant level. When initial NO3--N was leached, it was no good relationship between mineralizable N extracted by aerobic incubation, soil initial mineral N and mineralizable N extracted by aerobic incubation, N0 and soil initial mineral N and N0 with raygrass nitrogrn uptake, the correlation coefficients were 0.410, 0.553, 0.492 and 0.419, respectively, indicating that the poor effects of mineralizable N on reflecting soil N capacity were influenced and disturbed by initial nitrate.

以包括土壤起始NO3--N盆栽試驗(yàn)植物吸氮量為參比色七七亚洲另类，通氣培養(yǎng)前CaCl2所淋洗起始NO3--N和起始礦質(zhì)氮與5期黑麥草地上部氮素累積量密切相關(guān)jjzz污网站，相關(guān)系數(shù)分別為0.856和0.862，達(dá)1%顯著水平国外爱爱网站；與此相反免费在线观看做爱，通氣培養(yǎng)30周所礦化氮素、土壤起始礦質(zhì)氮+通氣培養(yǎng)30周礦化氮素不卡福利一区视频、氮素礦化勢(shì)(N0)及N0+起始礦質(zhì)氮與5期黑麥草地上部氮素累積量間無(wú)顯著相關(guān)關(guān)系尹人在线视频综合，相關(guān)系數(shù)分別僅為0.410、0.553日本三级精品、0.492和0.419影音先锋AV我色资源。