邻居少妇张开腿让我爽了在线观看,国产精品天天AV精麻,木下凛子成人中文在线,综合激情天天

     
  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
 
教师AV超碰| 99久久艹精品| 日韩射精大全| 亚洲综合亚洲日韩一区| 亚洲熟妇与黑人XXXxX| 国产欧美综合三级伦| 久久99就去干无码人妻| 天天AV天天翘天天综合网| 久久综合给合久久久狠狠狠色| 免费的黄片视频小说| 国产熟女免费观看一区| 天天摸日日添欧美影院| 欧美中文无码一区二区三区男男| 自拍偷拍 激情文学| 欧美三级片精品久久| 色悠悠国产| 日韩欧美真人在线观看| 国产一区二区大香蕉| 精品推荐二区三区| 亚洲日韩一区二区欧美第一页| 欧美日韩在线三区四区| 曰本精久久| 国产欧美日韩在线观看www| 免费看在线日b视频| AV三级片一区二区| 日韩激情视频在线| av无码电影1区2区| 18 在线观看免费视频| 黑鸡巴久久无码| 又黄又粗免费视频| 超碰caoporn恶魔| 一区二区三区四五区av| 欧美熟女在线观看| 亚洲日韩高清中文字幕| 91吧国产精品视频| 成人激情强奸av| 国产欧美精品一区二区三区影院| 欧美 日韩 国产 中文字幕| 欧美亚洲一级片| 国产欧美第一页色欲| 色性福利视频在线|