邻居少妇张开腿让我爽了在线观看,国产亚洲精品精品漫画,蜜臀久热欧美,人妻少妇内射网

     
  中文版 English
 
Hot news:
  News
  Company news
  Industry News
  Current news
Hot Product
IPX1 IPX2 Drip Waterproof Test...
UL1439 Sharp Edge Tester
BND-TPK05 IEC 60529 Test Probe...
IEC62368 test probe kit BND-TP...
IEC 61032 Standard Test Probe ...
IEC60320 EN60320 Appliances co...
UL 498 Standard Plugs and Rece...
IPX1 to IPX4 Drip rain test an...
Vertical horizontal vibration ...
IP5X IP6X Sand and dust proof ...
climate constant temperature a...
IPX1 to IPX9 waterproof testin...
 
 
Industry News
Home  -  News  -  Industry News
Why need PH soil sensor?
From: Boand  Date: 2018-12-11 14:23:16

Why need PH soil sensor?


The influences of soil pH on plants

Plants grow normally over a wide range, but plants have their own proper pH. PH value of most plants grow normally around 7.0. Most plants are difficult to grow at pH> 9.0 or <2.5.

Therefore, the actual production should pay more attention to changes in pH of soil to take a scientific and rational means to actively control the soil pH, soil buffer to improve performance.

 measure the significance of soil pH value

· The effect of soil pH on nutrient availability. Such as: nitrogen in 6 to 8 highly effective, because less than 6, Azotobacter activity decreased, while greater than 8, the nitrification was inhibited; Phosphorus 6.5 to 7.5 in the high availability. The availability of calcium and magnesium is best at pH 6-8; borates are more effective at pH 5-7.5.

Plant pests are directly related to soil pH. Underground pests often require a certain range of pH environmental conditions, such as bamboo locust like acid, beetle like alkali. Some diseases only occur within a certain pH range, such as damping-off disease often occurs in alkaline and neutral soil.

· Proper use of fertilizers. Based on the application of organic fertilizer, fertilizers should be rationally applied according to the degree of acid, alkali and soil fertility.

 
 
Home  |  Products  |  News  |  About us  |  Feedback  |  Contact us  |  
Copyright © 2008-2015 Hong Kong Bonad Technology Limited | Shenzhen Bonad Instrument Co., LTD. All Rights Reserved.
 
    Add:C505, Hongdu Building,Bao\\\'an45 district,Shenzhen,518101,Guangdong Province,China    Tel:+86-13380391156    Fax:0755-23721200    Email:Alice@szbonad.com
 
麻豆精品动漫一区二区三区| 日韩草逼网站| 久久ww.wwww| 中文字幕一区一区一区二区一区 | 久久久久综合色色色| 一本色韩日| 在线观看 欧美 日韩 国产| 太久一区| 午夜福利合集在线观| 欧美精三级一区二区| 欧美精品精品一区二区人妻电影| 美女打开腿黄网站免费| 日本干精品| 91高清一区二区三区| 啊啊啊嗯嗯啊好大在线观看| 啪啪啪免费一区一片| 色色美女久久久| 国产三级av一区| av在线网站小说| 日本一二三不卡视直播| www.草逼鸡巴逼逼逼| 丁香五月尻屁网| 91成人精品日韩| 欧美亚洲视频一区| 无套内射视频| 亚洲思思久久| 日韩欧美丝袜美腿综合另类一区在线| 日韩欧美综合成人观看| 殴美激情免费| 欧美色图亚洲图片| 国产熟女黄片一级| 狼人插麻豆国产| 看艹b视频| 国产精品99久久久久宅男| 久久精品99久久国产香蕉欧美| 大香蕉在线大香蕉久在线| 春色激情| 家庭 亚洲 五月天 久久| 久久亚洲 一区| 一级日韩在线观看欧美三级| WWW.亚洲激情综合网|