A notched disc was installed with an angle of 7 degrees to the direction of the front. Soil-bin test showed that the driven disc cutting part has a good ability to penetrate into the soil and cut corn rootstalk. It can also...

土槽試驗結(jié)果表明：驅(qū)動圓盤不僅具有較強(qiáng)的入土能力午夜精品理论免费影院在线观看，而且破茬效果良好鸥美成视频，在切斷秸稈和破除根茬的同時能夠開出一條寬約5cm的播種帶，為播種和施肥創(chuàng)造良好的種床條件亚洲午夜九九九九九。

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

因此男人的天堂精品视频网站，在麥田施肥時，應(yīng)根據(jù)前者的結(jié)果久草欧美性爱，實行隔壟背施磷91中文字幕永久在线看，其肥效會最高乱伦视频无码一级。

In order to search after appropriate nitrogen application dosage and proportion of phosphorus and potassium in the fertilizer composition, provide with a reasonable economic principle for scientific fertilization and guidance schemes for the production of quality sun-cured tobacco, an orthogonal design was used with small plot trials in the suitable growing areas to compare the effects on growth and development, yield, output value, and smoking quality of sun-cured tobacco, the results showed that the influences occurred in varying degrees while less or ruleless effects displaying on appearance quality and botanic characters respectively.

為研究和探索紅土?xí)駸熯m宜的施氮量和氮磷鉀比例，為生產(chǎn)優(yōu)質(zhì)紅土?xí)駸熖峁┙?jīng)濟(jì)合理的科學(xué)施肥依據(jù)和指導(dǎo)方案av福利资源福利，運用正交設(shè)計啪无码高请不卡在线观看，在紅土?xí)駸熯m宜種植區(qū)進(jìn)行重復(fù)小區(qū)比較試驗，研究不同施氮量和不同氮磷鉀比例對紅土?xí)駸熒L發(fā)育情況午夜a一级毛片视频网站在线免费观看、產(chǎn)量欧美精品手机在线一级播放、產(chǎn)值和內(nèi)在品質(zhì)的影響，結(jié)果表明那里有黄色毛片看，不同施氮量和氮磷鉀比例對紅土?xí)駸煹漠a(chǎn)量亚洲欧美日韩在线一区二区三区、產(chǎn)值、以及內(nèi)在品質(zhì)存在不同程度的影響欧美h福利网站，而對煙絲外觀質(zhì)量的影響較小福利黄色一区，對植物學(xué)性狀的影響沒有規(guī)律。

The reduction of the amount of runoff ranged from 24 to 65%,when fertilizer was applied.

施肥情況下欧美性爱第十页，徑流量減少24%~65%色黑人网。

The method of sand filter tube was used to study the mineralization rate of black soil(0～120 cm)and different organic manures with different manuring levels.

本文用砂濾管法研究了甜菜生育期間黑土0～120 cm 的礦化率和不同有機(jī)肥及其不同施肥水平的礦化率。

Red soil ; Satsuma ; Application ; Phosphorus ; Potassium ; Calcium ; Lime requirement

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Help advance somebody's career what what is appropriate to the occasion offers fixed rate is shady, maintain temperature to be in 12, 29 ℃ left and right sides, winter temperature appropriate is maintained in 16, 18 ℃, chun Xia two season grow exuberant, need taller air humidity, can undertake sparge; To soil the requirement does not father very, but the requirement keeps measurable and wet, grow seasonal, about 2 weeks apply fertilizer, and winter soil can work a bit and cool, reduce fertilization number; The method of minute of root is used more when breed; At Chu Xia season undertakes, return the method that can use cuttage additionally; Main pest has powdery flea, red spider, aphid, scale insect to wait.

栽培時宜給予一定程度的遮陰成年人观看黄色网站免费，并保持溫度在12—29℃左右女生自慰出水网站，冬季溫度宜維持在16—18℃，春夏兩季生長旺盛性欧美xxxx，需較高空氣濕度国产精品第一页福利在线，可進(jìn)行噴霧；對土壤要求不甚嚴(yán)91色热热，但要求保持適度濕潤亚洲人成在线观看网站不卡，生長季節(jié)，約2周施一次肥欧美性爱YY特黄特黄免费大片，而冬季土壤可稍干和涼爽国产18av视频，并減少施肥次數(shù)；繁殖時多采用分根的方法黄色网站视；于初夏季節(jié)進(jìn)行4455永久在线播放，另外還可采用扦插的方法；主要害蟲有粉蚤。紅蜘蛛农村老熟女乱子视频。蚜蟲亚洲欧美日韩色图。介殼蟲等。

Influence of sowing quantity,seedtime,irrigation and fertilization on Wheat Black point is researched.

研究了播量黄色网址国产区、播期超碰巨乳伊人、灌水、施肥等栽培因子對小麥黑胚病發(fā)生的影響免费爆操网站。

It was suggested that the self-organization and self-fertilization capacity were built up with succession, compatible to the vegetation succession principle.

群落自組織欧美在线喷浆、自我施肥能力增強(qiáng)與植物群落演替規(guī)律相適應(yīng)。

Before the experiments, the selection of grass seed, the semination density and the amount of fertilizer were analyzed in terms of theory and practice.

在了解地膜物理性能的基礎(chǔ)上日韩在线7777，在內(nèi)蒙古高速公路和北京郊區(qū)進(jìn)行了地膜的野外應(yīng)用試驗久操网站，在野外試驗前，對草種的選擇以及播種密度和施肥量進(jìn)行了理論及實驗分析国产男人黄色。