日韩欧美一级特黄大片,无码AV片在线观看免费,亚洲AV成人无码精品网站,九九在线视频免费观看精品视频

     
  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
 
午夜性福福利视频一区二区三区| 国产熟女露脸普通话对白| 国产91视频观看| 国产精品日韩精品欧美精品| 久久综合娱乐中文网| 大鸡巴射精在小穴动漫版| 久久高清中文字幕第一页| 中文字幕乱码一区二区三区麻豆| 黑人猛操日本美女| 国产精品熟女视频播放| 国产尤物蜜臀AV| 亚洲精品自拍偷拍| 国产熟女视频一区二区三区| 午夜精品福利一区二区三区蜜桃p| 色哟哟精品视频一区二区| 中文字幕在线精品的视频| 日本熟人妻中文字幕在线| 加勒比在线不卡一区二区观看| 另类亚洲欧美专区第一页| 亚洲欧洲日本精品| 国产精品国产精黄 | 女人张开腿让男人捅个爽| 最新中文字幕av不卡高清| 亚洲AV无码一区二区三区系列| 鸡巴操美女小穴羞羞视频| 日本成人在线一区中文字幕| 粉嫩小穴被大鸡巴操视频在线观看| 骚女人被大吊干视‘| 日本免费无码一区二区到五区| 国产午夜久久精品一区四虎| 无码人妻丰满熟妇区精品| 国产伦精品一区二区三区视频抖音| 中国毛茸茸的操逼| 亚洲v国产v天堂a无码| 日本亚洲免费不卡| 鸡巴插骚逼真舒服| 色一情一交一乱一区二区| 浪潮AV色综合久久天堂| 中文字幕精品字幕一区二区三区| 午夜色大片在线免费观看| 亚洲午夜国产片在线观看|