Citrus garden is covered with grass in summer

According to our experiments in recent years, the orange grass cover in summer can effectively exert the comprehensive effect of improving soil fertilization, water storage and drought resistance, temperature and heat insulation, and preventing fruit drop, significantly improving citrus quality and yield, and increasing the yield by 10%. %the above. However, the citrus groves have high requirements for technology, and the methods are not effective. To this end, we will discuss the main points of grass-covering technology in combination with practice. 1, suitable cover time. Usually before the arrival of the drought, it is advisable to cover the grass after fully cultivating and cultivating the soil in the garden after the rain. In winter and spring, the grass can be turned into the ground. The time should not be too late. If the drought has already arrived, then the grass will be effective. However, the functions of adjusting water, fertilizer, gas and heat will be relatively weakened and will not reach the best effect of grass cover. 2, suitable way of covering grass. The way of covering the grass in the citrus groves depends on the source of grass. In areas where there are sufficient grass sources, the whole garden will be covered with grass. Conditional orange orchards, wheat straw, corn stalks, weeds, straw, bean stalks, green manure, shanqing, etc. can also be crushed and mixed with soil and fertilizer to cover the whole garden. Where there are insufficient grass sources, the quality of the grass should be guaranteed, and how much it can be covered. It cannot be covered only by the tree. After the grass is covered, the soil blocks shall be sown to prevent the wind from blowing grass. 3, suitable thickness of grass cover. The thickness of the entire garden is about 10 to 20 cm. The young orchard is thicker and thicker. The mature orange orchard is more thin; the garden is thicker and the garden is thinner. The general mu need grass the most 60 ~ 80 Tam. If the amount of grass is not enough to cover the tree plate, the thickness of the grass layer must reach 20 cm. 4, attention. After the orange garden is covered with grass, if the ditch is not smooth, once it meets with continuous rain, the permeation and permeability of the garden soil will be inhibited, and in serious cases, it will not cause rot. Therefore, pay attention to clean up the ditch. If grass cover is not enough, it can be properly watered. Before the pests and stalks are covered, they should be exposed to the sun for 2 to 3 days, or be sterilized with lime water to kill the pests.

Roughness Profilometer

Roughness Profile Measuring Instruments all-in-one machine is an all-in-one machine for measuring profile shape and surface roughness, which has the powerful function of analyzing and measuring profile shape and surface roughness. Realize accurate measurement of dimensions, shape and roughness. It is mainly used to measure the parameters of the surface micro-geometry and macro-geometry of mechanical parts such as straightness, inclination, angle treatment, roundness treatment, double-groove treatment, double-arc treatment, etc.

Performance characteristics
1. High accuracy, high stability and high repeatability: meet the measurement accuracy requirements of the measured part.
1) Select high-precision grating measurement system and high-precision inductance measurement system, with high measurement accuracy;
2) Independently researched and developed high-precision grinding guide rail system, which has good wear resistance of guide rail materials and ensures stable and reliable operation of the system;
3) High-performance linear motor drive system ensures high measurement stability and good repeatability.
2. Intelligent management and detection software system:
The operation interface of the instrument is friendly, the operator can easily master the operation of the instrument, and the use is very simple.
1) The company has accumulated many years of practical measurement software design experience to provide customers with simple, practical and fast operation experience;
2) The company has invested many years of human resources in the development of instrument software, with special software copyright;
3) With powerful functions, it can automatically process data, print reports in various formats, and automatically display, print, save and query measurement records;
The data can be archived or printed in a centralized manner, which does not take up the verification operation time;
4) The measurement range is wide, which can meet almost all types of workpiece profile measurement, including special measurement functions of special workpiece screw, bearing, thread and other profiles;
5) The measured section can be selected automatically and manually for evaluation, and software functions can be customized according to customer requirements;
6) Powerful CNC automatic measurement and automatic labeling analysis function;
For large quantities of the same type of workpiece, it can carry out CNC measurement, automatically analyze and process the data, and carry out SPC statistics on the data, and can carry out statistical analysis in various ways to give quality control guidance;
7) It can automatically record and save all verification results by using computer large-capacity database storage.
3. It can also measure surface roughness and contour shape
With the same main body, you can only switch different modules to measure the profile shape and microroughness of the product.
4. Multi-parameter evaluation
The roughness can be automatically evaluated according to different standards, including Ra, Rp, Rv, Rz, Rt, Rmax, Rq, Rsk, Rku, RSm, RPc, Rdq, Rdc, Rmr and P parameters, W parameters, Motif parameters, Rcore parameters and other multi-parameter evaluation.
5. Thickness parameter measurement
When measuring the roughness parameters, the height and thickness of some film steps within 600 microns can be measured simultaneously. The measurement is convenient, and the accuracy is controlled within 2% H (H, the total height of measurement). It is especially suitable for high-precision measurement occasions without scratches.
6. Measuring force system:
With the voice coil motor force measuring system, the force measurement can be continuously adjustable from 10 to 150 mN, and the force measurement resolution can reach 0.2 mN; It avoids the force measurement error caused by the vibration of the surrounding environment when the old weight is loaded, and reduces the measurement error caused by the change of the force measurement.
7. Intelligent protection system:
The instrument is protected by hardware and software in all directions, which can effectively protect the instrument host and probe, and reduce the probe and instrument damage caused by personnel's operation errors.
8. Flexible manual control:
The instrument is equipped with a special separating operating rod, which can be placed at any position to control the operation when the instrument is operated and moved, and the measuring needle can be roughly positioned before measuring the workpiece; In the case of leaving the computer, the operating rod has the functions of moving the measuring needle left and right/up and down, emergency stop, the angle swing of the measuring rod up and down, and multi-level speed adjustment.

Profile Measuring Instruments,Profilometer Accuracy,Profile Measuring Machine,Surface Profile Measurement

Zhejiang dexun instrument technology co., ltd , https://www.dexunmeasuring.com